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4 Commits

Author SHA1 Message Date
Nate Brown aa1338b984 Let the darwin tun adopt an fd the host already configured 2026-08-03 19:12:04 -05:00
Nate Brown 599620f6ab Cancel the context when Main hands back no Control 2026-08-03 17:53:44 -05:00
Nate Brown 72bf111209 Add an e2e Drop exit type and a roaming recovery measurement (#1819)
smoke-extra / freebsd-amd64 (push) Failing after 15s
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smoke-extra / netbsd-amd64 (push) Failing after 14s
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Build and test / Static checks (push) Successful in 18s
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Build and test / Test linux-boringcrypto (push) Failing after 2m45s
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2026-07-23 17:02:02 -05:00
Nate Brown 1617897043 v1.11.0 changelog (#1792)
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2026-07-23 13:13:45 -05:00
28 changed files with 571 additions and 541 deletions
+30 -10
View File
@@ -25,19 +25,39 @@ jobs:
go-version: '1.26'
check-latest: true
- name: Smoke Docker
run: make smoke-docker
- name: build
run: make bin-docker CGO_ENABLED=1 BUILD_ARGS=-race
- name: Smoke Docker IPv6 overlay
run: make smoke-docker-ipv6
- name: setup docker image
working-directory: ./.github/workflows/smoke
run: ./build.sh
- name: Smoke Relay Docker
run: make smoke-relay-docker
- name: run smoke
working-directory: ./.github/workflows/smoke
run: ./smoke.sh
- name: Smoke Docker boringcrypto
run: make boringcrypto smoke-docker
- name: setup docker image ipv6
working-directory: ./.github/workflows/smoke
run: SMOKE_OVERLAY_IPV6=1 ./build.sh
- name: Smoke Docker fips140
run: make fips140-all GOALS=smoke-docker
- name: run smoke ipv6
working-directory: ./.github/workflows/smoke
run: SMOKE_OVERLAY_IPV6=1 ./smoke.sh
- name: setup relay docker image
working-directory: ./.github/workflows/smoke
run: ./build-relay.sh
- name: run smoke relay
working-directory: ./.github/workflows/smoke
run: ./smoke-relay.sh
- name: setup docker image for P256
working-directory: ./.github/workflows/smoke
run: NAME="smoke-p256" CURVE=P256 ./build.sh
- name: run smoke-p256
working-directory: ./.github/workflows/smoke
run: NAME="smoke-p256" ./smoke.sh
timeout-minutes: 10
+3 -8
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@@ -58,14 +58,9 @@ jobs:
e2e-cmd: make e2evv
- name: linux-boringcrypto
os: ubuntu-latest
build-cmd: make boringcrypto
test-cmd: make boringcrypto test
e2e-cmd: make boringcrypto e2evv
- name: linux-fips140
os: ubuntu-latest
build-cmd: make fips140-all
test-cmd: make fips140-all GOALS=test
e2e-cmd: make fips140-all GOALS=e2evv
build-cmd: make bin-boringcrypto
test-cmd: make test-boringcrypto
e2e-cmd: make e2e GOEXPERIMENT=boringcrypto CGO_ENABLED=1 TEST_ENV="TEST_LOGS=1" TEST_FLAGS="-v -ldflags -checklinkname=0"
- name: linux-pkcs11
os: ubuntu-latest
build-cmd: make bin-pkcs11
+82
View File
@@ -7,6 +7,88 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
## [Unreleased]
## [1.11.0] - 2026-07-23
See the [v1.11.0](https://github.com/slackhq/nebula/milestone/25?closed=1) milestone for a complete list of changes.
### Breaking
- Logging has switched from logrus to Go's structured `slog`. Log output changes: levels are upper case
(`level=INFO`), trace prints as `level=DEBUG-4`, timestamps are always RFC3339Nano and `logging.timestamp_format`
is ignored, and some messages were reworded. Review any log parsing before upgrading. This is also an API break
for embedders, as constructors now take a `*slog.Logger`. (#1672, #1734, #1621)
- `firewall.inbound_action` and `firewall.outbound_action` (used to set reject vs. drop policy) were each being
applied to the opposite direction, that is now corrected. This only affects how blocked packets are answered, not
which packets the firewall allows or denies. If you set either of these you are getting the behavior of the other
one today and likely want to swap them before upgrading. (#1798)
- On Windows, Nebula now installs WFP PERMIT filters for the nebula adapter and the listener port by default. WFP
sits below Windows Defender Firewall, so any WDF inbound rules you rely on for either will no longer apply. Set
`tun.windows_bypass_wdf` and `listen.windows_bypass_wdf` to false to leave WDF in charge. (#1710)
- On Windows, the nebula device is now set to the `private` network category instead of whatever Windows decided,
which is usually `Public`. This makes the host firewall less restrictive on the overlay. Set
`tun.network_category` to `unset` to keep the old behavior. (#1710)
- Reject packets for non-TCP now use ICMP code 13, communication administratively prohibited, instead of code 3,
port unreachable. Anything keying off the old code needs updating. (#1766, #1768)
- The SSH debug server's profiling commands are now confined to `sshd.sandbox_dir`, which defaults to
`$TMP/nebula-debug`. Relative paths resolve inside it and absolute paths outside it are rejected, so anything
scripting `start-cpu-profile`, `save-heap-profile`, or `save-mutex-profile` with a path elsewhere needs the
directory set. The directory is not created for you. (#1622)
### Added
- Sign the Windows release binaries. (#1718)
- Generate IPv6 reject packets, matching the existing IPv4 behavior. (#1766, #1767, #1768)
- Accept `-` in `nebula-cert` to read from stdin or write to stdout. (#1714)
- Search for both `config.yml` and `config.yaml` in service and command line modes. (#1717)
- Add version labels to the Docker/OCI images. (#1772)
- Rebind the listener and re-query lighthouses on macOS when the underlay network changes, so devices moving
between wifi and wired or between networks recover without waiting for dead tunnel detection. Controlled by
`listen.rebind_on_network_change` (default `true`, not reloadable). (#1816)
### Changed
- Reload the firewall when the unsafe networks in the certificate change. (#1719)
- Reconfigure, start, and stop the stats listener on a config reload instead of requiring a restart. (#1670)
- Update a static host's addresses when they change on reload. (#1713)
- Don't require a port on ICMP firewall rules. (#1609)
- Connection track ICMP traffic. (#1602)
- Return `NODATA` instead of `NXDOMAIN` from the DNS server for a name that exists but has no record of the
requested type, so clients that query `AAAA` first (busybox/Alpine) fall through to `A`. (#1668)
- Record the local host's details in the DNS server. (#1716)
- Install Windows unsafe routes as link routes. (#1709)
- Reduce relay handshake log spam, and only log a handshake send error at error level when the remote list
changes. (#1733, #1765, #1810)
- Start, stop, and reload subsystems (DNS, stats, conntrack, ssh, punchy) cleanly without leaking goroutines. (#1640, #1654, #1661, #1667, #1669, #1708, #1806, #1815)
- `Control` is now safe to stop and wait on from any lifecycle state, and a new `Control.Wait` blocks until nebula
has fully stopped and returns the first fatal reader error. Failed starts release the udp sockets and tun fd
instead of leaking them. (#1794)
- Trigger an immediate lighthouse update when reconnecting to or adding a lighthouse instead of waiting for the next update tick. (#1645)
- Bring the Darwin and OpenBSD tun implementations in line with the other BSDs. (#1703)
- Update to build against go v1.26. (#1818)
- Various dependency updates. (#1586, #1587, #1604, #1617, #1618, #1627, #1628, #1629, #1652, #1664, #1665, #1697, #1721, #1732, #1742, #1743, #1750, #1763, #1771, #1782, #1800, #1807)
### Fixed
- Fix a data race on a host's remote address that could send packets to the wrong address during a roam. (#1773)
- Fix tunnels that could permanently escape connection manager monitoring. (#1752)
- Fix a crash when reloading the SSH server's trusted keys. (#1787)
- Fix hostmap corruption when a host has multiple overlay addresses. Each address now gets its own list instead of
a single shared chain, which also fixes two latent bugs on the add and makePrimary paths. (#1788, #1790)
- Apply `remote_allow_list` IPv4 rules to 4-in-6 mapped addresses. (#1786)
- Don't panic in the DNS server on a short or empty query name. (#1635)
- Advance the replay window on relayed packets so a relay drops replayed frames instead of re-forwarding them. (#1751)
- Fix a race in relay state handling. (#1753)
- Lock replay window updates so concurrent readers can't corrupt it. (#1802)
- Reject malformed handshakes more reliably, including invalid ed25519 key lengths. (#1601, #1756)
- Properly handle `closetunnel` packets. (#1638)
- Fix an IPv6 extension-header length overflow that could make the firewall parse the wrong protocol and ports. (#1789)
- Fix relay re-establishment when a handshake arrives over a relay entry that a one-sided teardown left
`Disestablished`, which silently dropped every send until dead tunnel detection forced a re-handshake. (#1805)
- Don't build new relay state on a tunnel that was just discarded. (#1796)
- Don't delete the wrong pending hostinfo in the handshake manager. (#1811)
- Don't call the packet reader after a UDP error on Darwin. (#1755)
- Open the FreeBSD tun device non blocking. (#1666)
## [1.10.3] - 2026-02-06
### Security
+21 -80
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@@ -72,17 +72,6 @@ ALL_CROSS_LINUX_ARM = linux-arm-5 linux-arm-6 linux-arm-7 linux-arm64
ALL_CROSS_LINUX_MIPS = linux-mips linux-mipsle linux-mips64 linux-mips64le linux-mips-softfloat
ALL_CROSS_LINUX_OTHER = linux-386 linux-ppc64le linux-riscv64 linux-loong64
# Based on section 2.2 of the Go Cryptographic Module CVMP Security Policy #5247
ALL_FIPS140 = linux-amd64-fips140 \
linux-arm64-fips140 \
windows-amd64-fips140 \
windows-arm64-fips140 \
darwin-arm64-fips140 \
freebsd-amd64-fips140 \
linux-arm-7-fips140 \
linux-mips64-fips140 \
linux-ppc64le-fips140
e2e:
$(TEST_ENV) go test -tags=e2e_testing -count=1 $(TEST_FLAGS) ./e2e
@@ -148,8 +137,6 @@ release-netbsd: $(ALL_NETBSD:%=build/nebula-%.tar.gz)
release-boringcrypto: build/nebula-linux-$(shell go env GOARCH)-boringcrypto.tar.gz
release-fips140: $(ALL_FIPS140:%=build/nebula-%.tar.gz)
BUILD_ARGS += -trimpath
bin-windows: build/windows-amd64/nebula.exe build/windows-amd64/nebula-cert.exe
@@ -170,20 +157,17 @@ bin-freebsd-arm64: build/freebsd-arm64/nebula build/freebsd-arm64/nebula-cert
bin-boringcrypto: build/linux-$(shell go env GOARCH)-boringcrypto/nebula build/linux-$(shell go env GOARCH)-boringcrypto/nebula-cert
mv $? .
bin-fips140: build/linux-$(shell go env GOARCH)-fips140/nebula build/linux-$(shell go env GOARCH)-fips140/nebula-cert
mv $? .
bin-pkcs11: BUILD_ARGS += -tags pkcs11
bin-pkcs11: CGO_ENABLED = 1
bin-pkcs11: bin
bin:
$(GOENV) go build $(BUILD_ARGS) -ldflags "$(LDFLAGS)" -o ./nebula${NEBULA_CMD_SUFFIX} ${NEBULA_CMD_PATH}
$(GOENV) go build $(BUILD_ARGS) -ldflags "$(LDFLAGS)" -o ./nebula-cert${NEBULA_CMD_SUFFIX} ./cmd/nebula-cert
go build $(BUILD_ARGS) -ldflags "$(LDFLAGS)" -o ./nebula${NEBULA_CMD_SUFFIX} ${NEBULA_CMD_PATH}
go build $(BUILD_ARGS) -ldflags "$(LDFLAGS)" -o ./nebula-cert${NEBULA_CMD_SUFFIX} ./cmd/nebula-cert
install:
$(GOENV) go install $(BUILD_ARGS) -ldflags "$(LDFLAGS)" ${NEBULA_CMD_PATH}
$(GOENV) go install $(BUILD_ARGS) -ldflags "$(LDFLAGS)" ./cmd/nebula-cert
go install $(BUILD_ARGS) -ldflags "$(LDFLAGS)" ${NEBULA_CMD_PATH}
go install $(BUILD_ARGS) -ldflags "$(LDFLAGS)" ./cmd/nebula-cert
build/linux-arm-%: GOENV += GOARM=$(word 3, $(subst -, ,$*))
build/linux-mips-%: GOENV += GOMIPS=$(word 3, $(subst -, ,$*))
@@ -194,11 +178,8 @@ build/linux-mips-softfloat/%: LDFLAGS += -s -w
# boringcrypto
build/linux-amd64-boringcrypto/%: GOENV += GOEXPERIMENT=boringcrypto CGO_ENABLED=1
build/linux-arm64-boringcrypto/%: GOENV += GOEXPERIMENT=boringcrypto CGO_ENABLED=1
# fips140
FIPSVERSION = v1.0.0
$(foreach _rule, $(ALL_FIPS140), build/$(_rule)/%): GOENV += GOFIPS140=$(FIPSVERSION)
$(foreach _rule, $(ALL_FIPS140), build/$(_rule)/%): BUILD_ARGS += -tags fips140enforce
build/linux-amd64-boringcrypto/%: LDFLAGS += -checklinkname=0
build/linux-arm64-boringcrypto/%: LDFLAGS += -checklinkname=0
build/%/nebula: .FORCE
GOOS=$(firstword $(subst -, , $*)) \
@@ -229,7 +210,10 @@ vet:
go vet $(VET_FLAGS) -v ./...
test:
$(TEST_ENV) go test $(TEST_FLAGS) -v ./...
go test -v ./...
test-boringcrypto:
GOEXPERIMENT=boringcrypto CGO_ENABLED=1 go test -ldflags "-checklinkname=0" -v ./...
test-pkcs11:
CGO_ENABLED=1 go test -v -tags pkcs11 ./...
@@ -272,72 +256,29 @@ ifeq ($(words $(MAKECMDGOALS)),1)
@$(MAKE) service ${.DEFAULT_GOAL} --no-print-directory
endif
# Useful to chain together, like:
# - make fips140 e2evv
# - make fips140 smoke-docker
# Use `release-fips140` to build release binaries
fips140:
@echo > $(NULL_FILE)
ifeq ($(strip $(GOFIPS140)),)
$(eval GOFIPS140 = $(FIPSVERSION))
endif
$(eval GOENV += GOFIPS140=$(GOFIPS140))
$(eval BUILD_ARGS += -tags fips140enforce)
$(eval TEST_ENV += $(GOENV))
$(eval CURVE = P256)
ifeq ($(words $(MAKECMDGOALS)),1)
@$(MAKE) fips140 GOFIPS140=$(GOFIPS140) ${.DEFAULT_GOAL} --no-print-directory
endif
# To test the future pending module, use like `make fips140-latest test`
ALL_GOFIPS140 = v1.0.0 v1.26.0 latest
define FIPS140_rule
fips140-$(1): GOFIPS140 = $(1)
fips140-$(1): fips140
endef
$(foreach _rule, $(ALL_GOFIPS140), $(eval $(call FIPS140_rule,$(_rule))))
# Iterate and run the goals for all fips versions, like `make fips140-all GOALS=test`
fips140-all:
@$(foreach _v,$(ALL_GOFIPS140),$(MAKE) fips140-$(_v) $(GOALS) &&) true
# Useful to chain together, like:
# - make boringcrypto e2evv
# - make boringcrypto smoke-docker
# Use `release-boringcrypto` or `bin-boringcrypto` to build release binaries
boringcrypto:
@echo > $(NULL_FILE)
$(eval GOENV += GOEXPERIMENT=boringcrypto CGO_ENABLED=1)
$(eval TEST_ENV += $(GOENV))
$(eval CURVE = P256)
ifeq ($(words $(MAKECMDGOALS)),1)
@$(MAKE) boringcrypto ${.DEFAULT_GOAL} --no-print-directory
endif
bin-docker: bin build/linux-amd64/nebula build/linux-amd64/nebula-cert
smoke-docker: BUILD_ARGS += -race
smoke-docker: GOENV += CGO_ENABLED=1
smoke-docker: bin-docker
# This is so we can limit `fips140` smoke test to just P256 curve.
if [ "$(CURVE)" != "P256" ]; then cd .github/workflows/smoke/ && $(GOENV) ./build.sh; fi
if [ "$(CURVE)" != "P256" ]; then cd .github/workflows/smoke/ && $(GOENV) ./smoke.sh; fi
cd .github/workflows/smoke/ && $(GOENV) NAME="smoke-p256" CURVE="P256" ./build.sh
cd .github/workflows/smoke/ && $(GOENV) NAME="smoke-p256" ./smoke.sh
cd .github/workflows/smoke/ && ./build.sh
cd .github/workflows/smoke/ && ./smoke.sh
cd .github/workflows/smoke/ && NAME="smoke-p256" CURVE="P256" ./build.sh
cd .github/workflows/smoke/ && NAME="smoke-p256" ./smoke.sh
smoke-relay-docker: BUILD_ARGS += -race
smoke-relay-docker: GOENV += CGO_ENABLED=1
smoke-relay-docker: bin-docker
cd .github/workflows/smoke/ && $(GOENV) ./build-relay.sh
cd .github/workflows/smoke/ && $(GOENV) ./smoke-relay.sh
cd .github/workflows/smoke/ && ./build-relay.sh
cd .github/workflows/smoke/ && ./smoke-relay.sh
smoke-docker-ipv6: export SMOKE_OVERLAY_IPV6 = 1
smoke-docker-ipv6: smoke-docker
smoke-docker-race: BUILD_ARGS = -race
smoke-docker-race: CGO_ENABLED = 1
smoke-docker-race: smoke-docker
smoke-vagrant/%: bin-docker build/%/nebula
cd .github/workflows/smoke/ && ./build.sh $*
cd .github/workflows/smoke/ && ./smoke-vagrant.sh $*
.FORCE:
.PHONY: all all-linux all-freebsd all-openbsd all-netbsd all-darwin all-windows all-cross-linux all-cross-linux-arm all-cross-linux-mips all-cross-linux-other all-cross-darwin all-cross-windows bench bench-cpu bench-cpu-long bin bin-windows bin-windows-arm64 bin-darwin bin-freebsd bin-freebsd-arm64 bin-boringcrypto bin-fips140 bin-pkcs11 bin-docker boringcrypto build-test-mobile docker e2e e2ev e2evv e2evvv e2evvvv e2e-bench fips140 fips140-all $(ALL_GOFIPS140:%=fips140-%) install proto release release-linux release-freebsd release-openbsd release-netbsd release-boringcrypto release-fips140 service smoke-docker smoke-relay-docker smoke-docker-ipv6 test test-pkcs11 test-cov-html vet smoke-vagrant/%
.PHONY: all all-linux all-freebsd all-openbsd all-netbsd all-darwin all-windows all-cross-linux all-cross-linux-arm all-cross-linux-mips all-cross-linux-other all-cross-darwin all-cross-windows bench bench-cpu bench-cpu-long bin build-test-mobile e2e e2ev e2evv e2evvv e2evvvv proto release service smoke-docker smoke-docker-race test test-cov-html smoke-vagrant/%
.DEFAULT_GOAL := bin
+2 -12
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@@ -145,27 +145,17 @@ To build nebula for a specific platform (ex, Windows):
See the [Makefile](Makefile) for more details on build targets
## Curve P256 and FIPS 140-3 mode
## Curve P256 and BoringCrypto
The default curve used for cryptographic handshakes and signatures is Curve25519. This is the recommended setting for most users. If your deployment has certain compliance requirements, you have the option of creating your CA using `nebula-cert ca -curve P256` to use NIST Curve P256. The CA will then sign certificates using ECDSA P256, and any hosts using these certificates will use P256 for ECDH handshakes.
Nebula can be built to support the [FIPS 140-3](https://go.dev/doc/security/fips140) mode of Go by running either of the following make targets. (This sets GOFIPS140=v1.0.0, which must be done at compile time so that the correct AES-GCM can be used for FIPS 140-3 enforcement mode).
```sh
make fips140
make fips140 test
make release-fips140
```
Nebula can also be built using the [BoringCrypto GOEXPERIMENT](https://github.com/golang/go/blob/go1.20/src/crypto/internal/boring/README.md) by running either of the following make targets.
In addition, Nebula can be built using the [BoringCrypto GOEXPERIMENT](https://github.com/golang/go/blob/go1.20/src/crypto/internal/boring/README.md) by running either of the following make targets:
```sh
make bin-boringcrypto
make release-boringcrypto
```
NOTE: boringcrypto support is deprecated and will be removed in the next release. Users should migrate to the native FIPS 140-3 mode described above.
This is not the recommended default deployment, but may be useful based on your compliance requirements.
## Credits
+1 -9
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@@ -3,7 +3,6 @@ package main
import (
"crypto/ecdsa"
"crypto/elliptic"
"crypto/fips140"
"crypto/rand"
"flag"
"fmt"
@@ -44,13 +43,6 @@ type caFlags struct {
subnets *string
}
func defaultCurve() string {
if fips140.Enforced() {
return "P256"
}
return "25519"
}
func newCaFlags() *caFlags {
cf := caFlags{set: flag.NewFlagSet("ca", flag.ContinueOnError)}
cf.set.Usage = func() {}
@@ -67,7 +59,7 @@ func newCaFlags() *caFlags {
cf.argonParallelism = cf.set.Uint("argon-parallelism", 4, "Optional: Argon2 parallelism parameter used for encrypted private key passphrase")
cf.argonIterations = cf.set.Uint("argon-iterations", 1, "Optional: Argon2 iterations parameter used for encrypted private key passphrase")
cf.encryption = cf.set.Bool("encrypt", false, "Optional: prompt for passphrase and write out-key in an encrypted format")
cf.curve = cf.set.String("curve", defaultCurve(), "EdDSA/ECDSA Curve (25519, P256)")
cf.curve = cf.set.String("curve", "25519", "EdDSA/ECDSA Curve (25519, P256)")
cf.p11url = p11Flag(cf.set)
cf.ips = cf.set.String("ips", "", "Deprecated, see -networks")
-5
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@@ -1,5 +0,0 @@
//go:build fips140enforce
//go:debug fips140=only
package main
+1 -1
View File
@@ -24,7 +24,7 @@ func newKeygenFlags() *keygenFlags {
cf.set.Usage = func() {}
cf.outPubPath = cf.set.String("out-pub", "", "Required: path to write the public key to")
cf.outKeyPath = cf.set.String("out-key", "", "Required: path to write the private key to")
cf.curve = cf.set.String("curve", defaultCurve(), "ECDH Curve (25519, P256)")
cf.curve = cf.set.String("curve", "25519", "ECDH Curve (25519, P256)")
cf.p11url = p11Flag(cf.set)
return &cf
}
-5
View File
@@ -1,5 +0,0 @@
//go:build fips140enforce
//go:debug fips140=only
package main
-5
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@@ -1,5 +0,0 @@
//go:build fips140enforce
//go:debug fips140=only
package main
+136
View File
@@ -0,0 +1,136 @@
//go:build e2e_testing
// +build e2e_testing
package e2e
import (
"testing"
"time"
"github.com/slackhq/nebula"
"github.com/slackhq/nebula/cert"
"github.com/slackhq/nebula/cert_test"
"github.com/slackhq/nebula/e2e/router"
"github.com/slackhq/nebula/udp"
)
// TestRecoveryTiming measures how long a tunnel takes to come back after the peer stops accepting our traffic,
// which is what a laptop waking on a new network looks like from the peer's side: its NAT has no state for where
// we are now, so everything we send disappears.
//
// It is a measurement, not a pass/fail assertion. Recovery is timed to the moment the peer punches back at us,
// since that is when its NAT opens and the tunnel is usable again.
//
// go test -tags e2e_testing -v -run TestRecoveryTiming ./e2e/
func TestRecoveryTiming(t *testing.T) {
for _, tc := range []struct {
name string
rebind bool
}{
{"no trigger", false},
{"rebind counter", true},
} {
t.Run(tc.name, func(t *testing.T) {
d, lost := measureRecovery(t, tc.rebind)
t.Logf("RESULT %-16s recovered in %-9v (%d packets lost)", tc.name, d.Round(time.Millisecond), lost)
})
}
}
// measureRecovery returns how long until the peer punched back, and how many of our packets died meanwhile. When
// rebind is true we call RebindUDPServer once the tunnel goes dark, which is what the darwin network change
// monitor does and what iOS has always done. When false, nothing tells nebula anything is wrong.
func measureRecovery(t *testing.T, rebind bool) (time.Duration, int) {
t.Helper()
ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version2, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
lhControl, lhVpnIpNet, lhUdpAddr, _ := newSimpleServer(cert.Version2, ca, caKey, "lh", "10.128.0.1/24", m{
"lighthouse": m{"am_lighthouse": true},
})
peerCfg := m{
"lighthouse": m{
"hosts": []any{lhVpnIpNet[0].Addr().String()},
"interval": 600,
"local_allow_list": m{
"10.0.0.0/24": true,
"::/0": false,
},
},
"static_host_map": m{
lhVpnIpNet[0].Addr().String(): []any{lhUdpAddr.String()},
},
}
myControl, myVpnIpNet, myUdpAddr, _ := newSimpleServer(cert.Version2, ca, caKey, "me", "10.128.0.2/24", peerCfg)
theirControl, theirVpnIpNet, theirUdpAddr, _ := newSimpleServer(cert.Version2, ca, caKey, "them", "10.128.0.3/24", peerCfg)
r := router.NewR(t, lhControl, myControl, theirControl)
defer r.RenderFlow()
defer func() {
lhControl.Stop()
myControl.Stop()
theirControl.Stop()
}()
lhControl.Start()
myControl.Start()
theirControl.Start()
r.RouteFor(time.Millisecond * 500)
myControl.InjectLightHouseAddr(theirVpnIpNet[0].Addr(), theirUdpAddr)
theirControl.InjectLightHouseAddr(myVpnIpNet[0].Addr(), myUdpAddr)
myControl.InjectTunPacket(BuildTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("establish")))
r.RouteFor(time.Second)
if myControl.GetHostInfoByVpnAddr(theirVpnIpNet[0].Addr(), false) == nil {
t.Fatal("failed to establish the tunnel we are measuring")
}
r.RouteFor(time.Millisecond * 500)
// From here the peer's NAT has no state for us, everything we send it disappears
start := time.Now()
blackholed := 0
var recovered time.Duration
if rebind {
myControl.RebindUDPServer()
}
// Keep the tun busy the way someone retrying a stalled connection would
stop := make(chan struct{})
defer close(stop)
go func() {
tick := time.NewTicker(time.Millisecond * 200)
defer tick.Stop()
for {
select {
case <-stop:
return
case <-tick.C:
myControl.InjectTunPacket(BuildTunUDPPacket(
theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("retry")))
}
}
}()
r.RouteForAllExitFuncOrTimeout(time.Second*30, func(p *udp.Packet, c *nebula.Control) router.ExitType {
if c == theirControl && p.From == myControl.GetUDPAddr() {
blackholed++
return router.Drop
}
// The peer reaching us directly is the moment its NAT opened, whether that is a punch or a handshake
if c == myControl && p.From == theirUdpAddr {
recovered = time.Since(start)
return router.RouteAndExit
}
return router.KeepRouting
})
if recovered == 0 {
t.Fatalf("no recovery within 30s (%d packets blackholed)", blackholed)
}
return recovered, blackholed
}
+19 -2
View File
@@ -153,6 +153,9 @@ const (
ExitNow ExitType = 1
// RouteAndExit routes this packet and exits immediately afterwards
RouteAndExit ExitType = 2
// Drop discards this packet without delivering it and keeps routing. Use it to simulate a blackhole, such as
// a restrictive NAT refusing traffic from an address it has not seen.
Drop ExitType = 3
)
type ExitFunc func(packet *udp.Packet, receiver *nebula.Control) ExitType
@@ -163,7 +166,9 @@ type ExitFunc func(packet *udp.Packet, receiver *nebula.Control) ExitType
func NewR(t testing.TB, controls ...*nebula.Control) *R {
ctx, cancel := context.WithCancel(context.Background())
if err := os.MkdirAll("mermaid", 0755); err != nil {
// t.Name() contains a slash for subtests, so the flow log can land in a nested directory
fn := filepath.Join("mermaid", fmt.Sprintf("%s.md", t.Name()))
if err := os.MkdirAll(filepath.Dir(fn), 0755); err != nil {
panic(err)
}
@@ -174,7 +179,7 @@ func NewR(t testing.TB, controls ...*nebula.Control) *R {
outNat: make(map[outNatKey]netip.AddrPort),
flow: []flowEntry{},
ignoreFlows: []ignoreFlow{},
fn: filepath.Join("mermaid", fmt.Sprintf("%s.md", t.Name())),
fn: fn,
t: t,
cancelRender: cancel,
}
@@ -687,6 +692,10 @@ func (r *R) RouteExitFunc(sender *nebula.Control, whatDo ExitFunc) {
p.Release()
return
case Drop:
// Record it so the flow log shows the attempt, but never hand it to the receiver
r.unlockedInjectFlow(sender, receiver, p, false)
case KeepRouting:
fp := r.unlockedInjectFlow(sender, receiver, p, false)
receiver.InjectUDPPacket(p)
@@ -779,6 +788,10 @@ func (r *R) RouteForAllExitFuncOrTimeout(timeout time.Duration, whatDo ExitFunc)
p.Release()
return true
case Drop:
// Record it so the flow log shows the attempt, but never hand it to the receiver
r.unlockedInjectFlow(cm[x], receiver, p, false)
case KeepRouting:
fp := r.unlockedInjectFlow(cm[x], receiver, p, false)
receiver.InjectUDPPacket(p)
@@ -884,6 +897,10 @@ func (r *R) RouteForAllExitFunc(whatDo ExitFunc) {
p.Release()
return
case Drop:
// Record it so the flow log shows the attempt, but never hand it to the receiver
r.unlockedInjectFlow(cm[x], receiver, p, false)
case KeepRouting:
fp := r.unlockedInjectFlow(cm[x], receiver, p, false)
receiver.InjectUDPPacket(p)
-4
View File
@@ -2,7 +2,6 @@ package nebula
import (
"context"
"crypto/fips140"
"errors"
"fmt"
"io"
@@ -239,9 +238,6 @@ func (f *Interface) activate() error {
"build", f.version,
"udpAddr", addr,
"boringcrypto", boringEnabled(),
"fips140Version", fips140.Version(),
"fips140Enabled", fips140.Enabled(),
"fips140Enforced", fips140.Enforced(),
)
if f.routines > 1 {
+5 -2
View File
@@ -22,9 +22,12 @@ type m = map[string]any
func Main(c *config.C, configTest bool, buildVersion string, l *slog.Logger, deviceFactory overlay.DeviceFactory) (retcon *Control, reterr error) {
ctx, cancel := context.WithCancel(context.Background())
// Automatically cancel the context if Main returns an error, to signal all created goroutines to quit.
// The goroutines started below stop only when this context does, and only a caller holding the
// Control can arrange that. Cancel whenever we are not handing one back, which covers an error
// and a config test alike: a config test used to leave the lighthouse query worker, and a
// hostname resolver per dns named static host, running for the life of the process.
defer func() {
if reterr != nil {
if retcon == nil {
cancel()
}
}()
+82
View File
@@ -0,0 +1,82 @@
package nebula
import (
"fmt"
"net/netip"
"os"
"path/filepath"
"testing"
"time"
"github.com/slackhq/nebula/cert"
cert_test "github.com/slackhq/nebula/cert_test"
"github.com/slackhq/nebula/config"
"github.com/slackhq/nebula/test"
"github.com/stretchr/testify/require"
"go.uber.org/goleak"
)
// TestMain_ConfigTestReleasesItsGoroutines pins the rule that Main only leaves goroutines running
// when it hands back a Control to stop them with.
//
// A config test gets no Control, so anything it started had nothing to stop it: the lighthouse
// query worker, and a hostname resolver per dns named static host, ran for the life of the
// process. That matters to every embedder that validates a config in process rather than by
// exec'ing, dnclient and the apple clients included, because they do it on each config load and
// the leak accumulates.
func TestMain_ConfigTestReleasesItsGoroutines(t *testing.T) {
defer goleak.VerifyNone(t, goleak.IgnoreCurrent())
l := test.NewLogger()
dir := t.TempDir()
before := time.Now().Add(-time.Hour)
after := time.Now().Add(time.Hour)
ca, _, caKey, caPEM := cert_test.NewTestCaCert(cert.Version2, cert.Curve_CURVE25519, before, after, nil, nil, nil)
networks := []netip.Prefix{netip.MustParsePrefix("10.0.0.1/24")}
_, _, keyPEM, certPEM := cert_test.NewTestCert(
cert.Version2, cert.Curve_CURVE25519, ca, caKey, "config-test", before, after, networks, nil, nil)
caPath := filepath.Join(dir, "ca.pem")
certPath := filepath.Join(dir, "cert.pem")
keyPath := filepath.Join(dir, "key.pem")
require.NoError(t, os.WriteFile(caPath, caPEM, 0o600))
require.NoError(t, os.WriteFile(certPath, certPEM, 0o600))
require.NoError(t, os.WriteFile(keyPath, keyPEM, 0o600))
// A static host by address, not by name: the query worker is the goroutine under test and a
// hostname would drag a real dns lookup into a unit test.
configBody := fmt.Sprintf(`
pki:
ca: %s
cert: %s
key: %s
static_host_map:
"10.0.0.2": ["192.0.2.1:4242"]
lighthouse:
hosts:
- "10.0.0.2"
listen:
host: 127.0.0.1
port: 0
tun:
disabled: true
firewall:
outbound:
- port: any
proto: any
host: any
inbound:
- port: any
proto: any
host: any
`, caPath, certPath, keyPath)
require.NoError(t, os.WriteFile(filepath.Join(dir, "config.yml"), []byte(configBody), 0o600))
c := config.NewC(l)
require.NoError(t, c.Load(dir))
ctrl, err := Main(c, true, "config-test", l, nil)
require.NoError(t, err)
require.Nil(t, ctrl, "a config test hands back nothing to stop, so it must stop itself")
}
+65 -4
View File
@@ -4,16 +4,77 @@
package noiseutil
import (
"crypto/boring"
"crypto/aes"
"crypto/cipher"
"encoding/binary"
// unsafe needed for go:linkname
_ "unsafe"
"github.com/flynn/noise"
)
var CipherAESGCM noise.CipherFunc = CipherAESGCMFIPS140
// EncryptLockNeeded indicates if calls to Encrypt need a lock
// This is true for boringcrypto because the Seal function verifies that the
// nonce is strictly increasing.
const EncryptLockNeeded = true
var boringEnabled = boring.Enabled()
// NewGCMTLS is no longer exposed in go1.19+, so we need to link it in
// See: https://github.com/golang/go/issues/56326
//
// NewGCMTLS is the internal method used with boringcrypto that provides a
// validated mode of AES-GCM which enforces the nonce is strictly
// monotonically increasing. This is the TLS 1.2 specification for nonce
// generation (which also matches the method used by the Noise Protocol)
//
// - https://github.com/golang/go/blob/go1.19/src/crypto/tls/cipher_suites.go#L520-L522
// - https://github.com/golang/go/blob/go1.19/src/crypto/internal/boring/aes.go#L235-L237
// - https://github.com/golang/go/blob/go1.19/src/crypto/internal/boring/aes.go#L250
// - https://github.com/google/boringssl/blob/ae223d6138807a13006342edfeef32e813246b39/include/openssl/aead.h#L379-L381
// - https://github.com/google/boringssl/blob/ae223d6138807a13006342edfeef32e813246b39/crypto/fipsmodule/cipher/e_aes.c#L1082-L1093
//
//go:linkname newGCMTLS crypto/internal/boring.NewGCMTLS
func newGCMTLS(c cipher.Block) (cipher.AEAD, error)
type cipherFn struct {
fn func([32]byte) noise.Cipher
name string
}
func (c cipherFn) Cipher(k [32]byte) noise.Cipher { return c.fn(k) }
func (c cipherFn) CipherName() string { return c.name }
// CipherAESGCM is the AES256-GCM AEAD cipher (using NewGCMTLS when GoBoring is present)
var CipherAESGCM noise.CipherFunc = cipherFn{cipherAESGCMBoring, "AESGCM"}
func cipherAESGCMBoring(k [32]byte) noise.Cipher {
c, err := aes.NewCipher(k[:])
if err != nil {
panic(err)
}
gcm, err := newGCMTLS(c)
if err != nil {
panic(err)
}
return aeadCipher{
gcm,
func(n uint64) []byte {
var nonce [12]byte
binary.BigEndian.PutUint64(nonce[4:], n)
return nonce[:]
},
}
}
type aeadCipher struct {
cipher.AEAD
nonce func(uint64) []byte
}
func (c aeadCipher) Encrypt(out []byte, n uint64, ad, plaintext []byte) []byte {
return c.Seal(out, c.nonce(n), plaintext, ad)
}
func (c aeadCipher) Decrypt(out []byte, n uint64, ad, ciphertext []byte) ([]byte, error) {
return c.Open(out, c.nonce(n), ciphertext, ad)
}
+32
View File
@@ -4,6 +4,8 @@
package noiseutil
import (
"crypto/boring"
"encoding/hex"
"testing"
"github.com/stretchr/testify/assert"
@@ -12,3 +14,33 @@ import (
func TestEncryptLockNeeded(t *testing.T) {
assert.True(t, EncryptLockNeeded)
}
// Ensure NewGCMTLS validates the nonce is non-repeating
func TestNewGCMTLS(t *testing.T) {
assert.True(t, boring.Enabled())
// Test Case 16 from GCM Spec:
// - (now dead link): http://csrc.nist.gov/groups/ST/toolkit/BCM/documents/proposedmodes/gcm/gcm-spec.pdf
// - as listed in boringssl tests: https://github.com/google/boringssl/blob/fips-20220613/crypto/cipher_extra/test/cipher_tests.txt#L412-L418
key, _ := hex.DecodeString("feffe9928665731c6d6a8f9467308308feffe9928665731c6d6a8f9467308308")
iv, _ := hex.DecodeString("cafebabefacedbaddecaf888")
plaintext, _ := hex.DecodeString("d9313225f88406e5a55909c5aff5269a86a7a9531534f7da2e4c303d8a318a721c3c0c95956809532fcf0e2449a6b525b16aedf5aa0de657ba637b39")
aad, _ := hex.DecodeString("feedfacedeadbeeffeedfacedeadbeefabaddad2")
expected, _ := hex.DecodeString("522dc1f099567d07f47f37a32a84427d643a8cdcbfe5c0c97598a2bd2555d1aa8cb08e48590dbb3da7b08b1056828838c5f61e6393ba7a0abcc9f662")
expectedTag, _ := hex.DecodeString("76fc6ece0f4e1768cddf8853bb2d551b")
expected = append(expected, expectedTag...)
var keyArray [32]byte
copy(keyArray[:], key)
c := CipherAESGCM.Cipher(keyArray)
aead := c.(aeadCipher).AEAD
dst := aead.Seal([]byte{}, iv, plaintext, aad)
assert.Equal(t, expected, dst)
// We expect this to fail since we are re-encrypting with a repeat IV
assert.PanicsWithError(t, "boringcrypto: EVP_AEAD_CTX_seal failed", func() {
dst = aead.Seal([]byte{}, iv, plaintext, aad)
})
}
+1 -4
View File
@@ -29,11 +29,8 @@ type CipherState interface {
// NewCipherState wraps the post-handshake noise.CipherState in the per-cipher type that matches cipherFunc.
// cipherFunc must be the same cipher used to build the noise CipherSuite that produced s.
func NewCipherState(s *noise.CipherState, cipherFunc noise.CipherFunc) CipherState {
if cs, ok := s.Cipher().(CipherState); ok {
return cs
}
switch cipherFunc.CipherName() {
case noise.CipherAESGCM.CipherName():
case CipherAESGCM.CipherName():
return NewCipherStateAESGCM(s)
case noise.CipherChaChaPoly.CipherName():
return NewCipherStateChaChaPoly(s)
+4 -11
View File
@@ -1,7 +1,6 @@
package noiseutil
import (
"crypto/fips140"
"testing"
"github.com/flynn/noise"
@@ -11,30 +10,24 @@ import (
func TestCipherStateAESGCMRoundtrip(t *testing.T) {
enc, dec := buildCipherStates(t, CipherAESGCM)
roundtrip(t, NewCipherState(enc, CipherAESGCM), NewCipherState(dec, CipherAESGCM))
roundtrip(t, NewCipherStateAESGCM(enc), NewCipherStateAESGCM(dec))
}
func TestCipherStateChaChaPolyRoundtrip(t *testing.T) {
enc, dec := buildCipherStates(t, noise.CipherChaChaPoly)
roundtrip(t, NewCipherState(enc, noise.CipherChaChaPoly), NewCipherState(dec, noise.CipherChaChaPoly))
roundtrip(t, NewCipherStateChaChaPoly(enc), NewCipherStateChaChaPoly(dec))
}
func TestNewCipherStateDispatch(t *testing.T) {
encA, _ := buildCipherStates(t, CipherAESGCM)
encC, _ := buildCipherStates(t, noise.CipherChaChaPoly)
if !boringEnabled && !fips140.Enabled() {
assert.IsType(t, &CipherStateAESGCM{}, NewCipherState(encA, CipherAESGCM))
} else {
// fips140
assert.IsType(t, encA.Cipher(), NewCipherState(encA, CipherAESGCM))
}
assert.IsType(t, &CipherStateAESGCM{}, NewCipherState(encA, CipherAESGCM))
assert.IsType(t, &CipherStateChaChaPoly{}, NewCipherState(encC, noise.CipherChaChaPoly))
}
func TestNewCipherStateUnsupportedPanics(t *testing.T) {
enc, _ := buildCipherStates(t, noise.CipherChaChaPoly)
enc, _ := buildCipherStates(t, CipherAESGCM)
assert.Panics(t, func() {
NewCipherState(enc, fakeCipher{})
})
-179
View File
@@ -1,179 +0,0 @@
package noiseutil
import (
"bytes"
"crypto/cipher"
"crypto/fips140"
"encoding/binary"
"fmt"
"reflect"
"runtime"
"unsafe"
// unsafe needed for go:linkname
_ "crypto/tls"
_ "unsafe"
"github.com/flynn/noise"
)
// TODO: Use NewGCMWithCounterNonce or NewGCMForQUIC once available:
// - https://github.com/golang/go/issues/73110
// - https://github.com/golang/go/issues/79219
// Using tls.aeadAESGCMTLS13 gives us the TLS 1.3 GCM, which also verifies
// that the nonce is strictly increasing. This works for both boringcrypto
// and fips140.
//
//go:linkname aeadAESGCMTLS13 crypto/tls.aeadAESGCMTLS13
func aeadAESGCMTLS13(key, noncePrefix []byte) cipher.AEAD
type cipherFn struct {
fn func([32]byte) noise.Cipher
name string
}
func (c cipherFn) Cipher(k [32]byte) noise.Cipher { return c.fn(k) }
func (c cipherFn) CipherName() string { return c.name }
// CipherAESGCMFIPS140 is the AES256-GCM AEAD cipher (using tls.aeadAESGCMTLS13, for both boringcrypto and fips140)
var CipherAESGCMFIPS140 noise.CipherFunc = cipherFn{cipherAESGCMFIPS140, "AESGCM"}
// tls.aeadAESGCMTLS13 uses a 4 byte static prefix and an 8 byte XOR mask
var emptyNonce = []byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
func cipherAESGCMFIPS140(k [32]byte) noise.Cipher {
gcm := aeadAESGCMTLS13(k[:], emptyNonce)
gcm = extractFIPSAEAD(gcm)
return &aeadGCMFIPS140Cipher{
AEAD: gcm,
}
}
type aeadGCMFIPS140Cipher struct {
cipher.AEAD
ready bool
}
// Extract the internal FIPS GCM implementation from the tls wrapper. The TLS
// wrapper is not thread safe around Open, so instead of locking around it we
// can grab the internal implementation that is thread safe. This is the FIPS
// module implementation: `crypto/internal/fips140/aes/gcm.GCMWithXORCounterNonce`
//
// - https://github.com/golang/go/blob/go1.26.4/src/crypto/internal/fips140/aes/gcm/gcm_nonces.go#L212-L287
//
// The wrapper is struct `crypto/tls.xorNonceAEAD` , with field `aead`:
//
// - https://github.com/golang/go/blob/go1.26.4/src/crypto/tls/cipher_suites.go#L482-L487
//
// This can be cleaned up once these FIPS implementations are exposed directly:
//
// - https://github.com/golang/go/issues/73110
func extractFIPSAEAD(xorNonceAEAD cipher.AEAD) cipher.AEAD {
r := reflect.ValueOf(xorNonceAEAD)
v := r.Elem().FieldByName("aead")
if !v.IsValid() {
// The internal crypto/tls.xorNonceAEAD struct no longer has an `aead`
// field. This can only happen on a Go version this code was not built
// against; the package init() self-test guards against ever reaching
// this at runtime, so this is a defensive fail-fast.
panic(fmt.Sprintf("noiseutil: could not extract FIPS AEAD from %T on %s: no `aead` field (incompatible Go version)", xorNonceAEAD, runtime.Version()))
}
v2 := reflect.NewAt(v.Type(), unsafe.Pointer(v.UnsafeAddr())).Elem()
aead, ok := v2.Interface().(cipher.AEAD)
if !ok {
panic(fmt.Sprintf("noiseutil: extracted FIPS `aead` field is %s, not a cipher.AEAD, on %s (incompatible Go version)", v2.Type(), runtime.Version()))
}
return aead
}
func (c *aeadGCMFIPS140Cipher) init(nonce []byte) {
// GCMWithXORCounterNonce expects that the first call to Seal
// is with a counter of `0`, this is how it extracts the nonce mask.
// We can clean this up in the future when NewGCMWithCounterNonce or
// NewGCMForQUIC are available:
if !bytes.Equal(emptyNonce, nonce) {
c.AEAD.Seal([]byte{}, emptyNonce, []byte{}, []byte{})
}
c.ready = true
}
func (c *aeadGCMFIPS140Cipher) Seal(dst, nonce, plaintext, additionalData []byte) []byte {
if !c.ready {
c.init(nonce)
}
return c.AEAD.Seal(dst, nonce, plaintext, additionalData)
}
func (c *aeadGCMFIPS140Cipher) Encrypt(out []byte, n uint64, ad, plaintext []byte) []byte {
return c.Seal(out, aeadGCMFIPS140CipherNonce(n), plaintext, ad)
}
func (c *aeadGCMFIPS140Cipher) Decrypt(out []byte, n uint64, ad, ciphertext []byte) ([]byte, error) {
return c.Open(out, aeadGCMFIPS140CipherNonce(n), ciphertext, ad)
}
func (c *aeadGCMFIPS140Cipher) EncryptDanger(out, ad, plaintext []byte, n uint64, nb []byte) ([]byte, error) {
binary.BigEndian.PutUint64(nb[4:], n)
out = c.Seal(out, nb, plaintext, ad)
return out, nil
}
func (c *aeadGCMFIPS140Cipher) DecryptDanger(out, ad, ciphertext []byte, n uint64, nb []byte) ([]byte, error) {
binary.BigEndian.PutUint64(nb[4:], n)
return c.Open(out, nb, ciphertext, ad)
}
func aeadGCMFIPS140CipherNonce(n uint64) []byte {
// GCMWithXORCounterNonce uses a 4 byte static prefix and an 8 byte nonce
var nonce [12]byte
binary.BigEndian.PutUint64(nonce[4:], n)
return nonce[:]
}
// init validates the go:linkname + reflection extraction and the nonce-reuse
// protection at startup, in every build. cipherAESGCMFIPS140 relies on unexported
// crypto/tls and crypto/internal/fips140 internals; if a future Go version changes
// those, this fails fast with a clear message instead of panicking per-handshake
// (or, worse, silently losing the strictly-increasing nonce check that is the whole
// point of using this cipher). Because this file has no build tag, this self-test
// runs even in non-FIPS builds, so the default CI lane catches an incompatible Go.
func init() {
var key [32]byte
c := cipherAESGCMFIPS140(key)
// Verify the extracted AEAD produces a working encrypt/decrypt roundtrip.
plaintext := []byte("nebula fips140 self-test")
ad := []byte("ad")
ct := c.Encrypt(nil, 1, ad, plaintext)
pt, err := c.Decrypt(nil, 1, ad, ct)
if err != nil {
panic(fmt.Sprintf("noiseutil: FIPS AES-GCM self-test roundtrip failed on %s: %v", runtime.Version(), err))
}
if !bytes.Equal(pt, plaintext) {
panic(fmt.Sprintf("noiseutil: FIPS AES-GCM self-test roundtrip returned wrong plaintext on %s", runtime.Version()))
}
// Verify the nonce-reuse protection still fires: re-encrypting with the same
// counter must panic. This is the guarantee we depend on for nonce safety, so
// if the extraction ever silently yields an AEAD without it, refuse to start.
// The strictly-increasing nonce check only exists under boringcrypto/fips140;
// in a plain build aeadAESGCMTLS13 wraps a standard GCM that does not enforce
// it (and CipherAESGCMFIPS140 is unused there anyway), so only assert it when
// one of those modes is active.
if (boringEnabled || fips140.Enabled()) && !reusePanics(c) {
panic(fmt.Sprintf("noiseutil: FIPS AES-GCM self-test did not reject a reused nonce on %s; nonce-reuse protection is missing (incompatible Go version)", runtime.Version()))
}
}
// reusePanics reports whether re-encrypting with an already-used counter panics,
// as GCMWithXORCounterNonce is expected to.
func reusePanics(c noise.Cipher) (panicked bool) {
c.Encrypt(nil, 2, nil, nil)
defer func() {
if recover() != nil {
panicked = true
}
}()
c.Encrypt(nil, 2, nil, nil)
return false
}
-48
View File
@@ -1,48 +0,0 @@
package noiseutil
import (
"crypto/cipher"
"crypto/fips140"
"encoding/hex"
"testing"
"github.com/stretchr/testify/assert"
)
// Ensure NewAESGCM validates the nonce is non-repeating
func TestNewAESGCM(t *testing.T) {
if !boringEnabled && !fips140.Enabled() {
t.Skip("TestNewAESGCM is only for fips140/boringcrypto")
}
key, _ := hex.DecodeString("feffe9928665731c6d6a8f9467308308feffe9928665731c6d6a8f9467308308")
iv, _ := hex.DecodeString("00000000facedbaddecaf888")
plaintext, _ := hex.DecodeString("d9313225f88406e5a55909c5aff5269a86a7a9531534f7da2e4c303d8a318a721c3c0c95956809532fcf0e2449a6b525b16aedf5aa0de657ba637b39")
aad, _ := hex.DecodeString("feedfacedeadbeeffeedfacedeadbeefabaddad2")
expected, _ := hex.DecodeString("6a65c2edd45bd63c7e29f40e3d2ed8ba2b99f4c83135383d5676652f255059ceb24863ff10afb1089db701245da87fb88d3acd5f9dd0770cac220c3c04145caf25e190aeb775e7080401c628")
var keyArray [32]byte
copy(keyArray[:], key)
c := CipherAESGCM.Cipher(keyArray)
aead := c.(cipher.AEAD)
dst := aead.Seal([]byte{}, iv, plaintext, aad)
t.Logf("%x", dst)
assert.Equal(t, expected, dst)
// We expect this to fail since we are re-encrypting with a repeat IV
switch {
case boringEnabled:
assert.PanicsWithError(t, "boringcrypto: EVP_AEAD_CTX_seal failed", func() {
dst = aead.Seal([]byte{}, iv, plaintext, aad)
})
case fips140.Version() == "v1.0.0":
assert.PanicsWithValue(t, "crypto/cipher: counter decreased", func() {
dst = aead.Seal([]byte{}, iv, plaintext, aad)
})
default:
assert.PanicsWithValue(t, "crypto/cipher: counter decreased or remained the same", func() {
dst = aead.Seal([]byte{}, iv, plaintext, aad)
})
}
}
-13
View File
@@ -1,13 +0,0 @@
//go:build fips140enforce
package noiseutil
import (
"crypto/fips140"
)
func init() {
if !fips140.Enforced() {
panic("Nebula compiled with fips140 expects FIPS140 to be enforced. Do not set GODEBUG=fips140, or if you do it must be set as GODEBUG=fips140=only")
}
}
+4 -15
View File
@@ -1,25 +1,14 @@
//go:build !boringcrypto
// +build !boringcrypto
package noiseutil
import (
"crypto/fips140"
"github.com/flynn/noise"
)
// EncryptLockNeeded indicates if calls to Encrypt need a lock
var EncryptLockNeeded = fips140.Enabled()
const EncryptLockNeeded = false
var CipherAESGCM noise.CipherFunc = initAESGCM()
func initAESGCM() noise.CipherFunc {
if fips140.Enabled() {
return CipherAESGCMFIPS140
} else {
return noise.CipherAESGCM
}
}
var boringEnabled = false
// CipherAESGCM is the standard noise.CipherAESGCM when boringcrypto is not enabled
var CipherAESGCM noise.CipherFunc = noise.CipherAESGCM
+14
View File
@@ -0,0 +1,14 @@
//go:build !boringcrypto
// +build !boringcrypto
package noiseutil
import (
"testing"
"github.com/stretchr/testify/assert"
)
func TestEncryptLockNeeded(t *testing.T) {
assert.False(t, EncryptLockNeeded)
}
+61 -3
View File
@@ -30,7 +30,10 @@ type tun struct {
Routes atomic.Pointer[[]Route]
routeTree atomic.Pointer[bart.Table[routing.Gateways]]
linkAddr *netroute.LinkAddr
l *slog.Logger
// hostOwned means the fd arrived from the OS, which has already configured addressing, mtu
// and routes for it. NEPacketTunnelProvider on darwin does this.
hostOwned bool
l *slog.Logger
}
type ifReq struct {
@@ -150,8 +153,48 @@ func (t *tun) deviceBytes() (o [16]byte) {
return
}
func newTunFromFd(_ *config.C, _ *slog.Logger, _ int, _ []netip.Prefix) (*tun, error) {
return nil, fmt.Errorf("newTunFromFd not supported in Darwin")
// newTunFromFd adopts a utun the host already created and configured, which is how a darwin
// network extension is handed its device. Everything about moving packets is shared with newTun,
// only the setup differs: the host owns addressing and routing here.
func newTunFromFd(c *config.C, l *slog.Logger, deviceFd int, vpnNetworks []netip.Prefix) (*tun, error) {
if err := unix.SetNonblock(deviceFd, true); err != nil {
// We own the fd from the moment it is handed to us
_ = unix.Close(deviceFd)
return nil, fmt.Errorf("failed to set the tun fd to non-blocking mode: %w", err)
}
file := os.NewFile(uintptr(deviceFd), "/dev/tun")
t := &tun{
f: file,
Device: utunNameFromFd(deviceFd),
vpnNetworks: vpnNetworks,
DefaultMTU: c.GetInt("tun.mtu", DefaultMTU),
hostOwned: true,
l: l,
}
if err := t.reload(c, true); err != nil {
_ = file.Close()
return nil, err
}
c.RegisterReloadCallback(func(c *config.C) {
if err := t.reload(c, false); err != nil {
util.LogWithContextIfNeeded("failed to reload tun device", err, t.l)
}
})
return t, nil
}
// utunNameFromFd asks the socket what interface it is, for logs. A blank name is not worth
// failing a tunnel over, so an error just leaves it empty.
func utunNameFromFd(fd int) string {
name, err := unix.GetsockoptString(fd, unix.AF_SYS_CONTROL, _UTUN_OPT_IFNAME)
if err != nil {
return ""
}
return name
}
func (t *tun) Close() error {
@@ -162,6 +205,12 @@ func (t *tun) Close() error {
}
func (t *tun) Activate() error {
// The host handed us a configured device. Its addresses, mtu and routes come from the network
// settings it applied, and a sandboxed extension cannot change them anyway.
if t.hostOwned {
return nil
}
devName := t.deviceBytes()
s, err := unix.Socket(
@@ -375,6 +424,11 @@ func getLinkAddr(name string) (*netroute.LinkAddr, error) {
}
func (t *tun) addRoutes(logErrors bool) error {
// The route tree is still ours, the system routing table is not
if t.hostOwned {
return nil
}
routes := *t.Routes.Load()
for _, r := range routes {
@@ -404,6 +458,10 @@ func (t *tun) addRoutes(logErrors bool) error {
}
func (t *tun) removeRoutes(routes []Route) error {
if t.hostOwned {
return nil
}
for _, r := range routes {
if !r.Install {
continue
+5 -20
View File
@@ -1,7 +1,6 @@
package nebula
import (
"crypto/fips140"
"encoding/binary"
"encoding/json"
"errors"
@@ -238,17 +237,10 @@ func (cs *CertState) getCertificate(v cert.Version) cert.Certificate {
return nil
}
// newCipherSuite builds the noise.CipherSuite for the given curve and cipher.
// When fips140Enforced is true (FIPS 140-only mode), non-approved algorithms
// (Curve25519 and ChaChaPoly) are rejected with an error. Callers pass
// fips140.Enforced() for fips140Enforced.
func newCipherSuite(curve cert.Curve, pkcs11backed bool, cipher string, fips140Enforced bool) (noise.CipherSuite, error) {
func newCipherSuite(curve cert.Curve, pkcs11backed bool, cipher string) (noise.CipherSuite, error) {
var dhFunc noise.DHFunc
switch curve {
case cert.Curve_CURVE25519:
if fips140Enforced {
return nil, errors.New("pki: use of Curve25519 is not allowed in FIPS 140-only mode")
}
dhFunc = noise.DH25519
case cert.Curve_P256:
if pkcs11backed {
@@ -261,9 +253,6 @@ func newCipherSuite(curve cert.Curve, pkcs11backed bool, cipher string, fips140E
}
if cipher == "chachapoly" {
if fips140Enforced {
return nil, errors.New("pki: use of ChaChaPoly is not allowed in FIPS 140-only mode")
}
return noise.NewCipherSuite(dhFunc, noise.CipherChaChaPoly, noise.HashSHA256), nil
}
return noise.NewCipherSuite(dhFunc, noiseutil.CipherAESGCM, noise.HashSHA256), nil
@@ -337,10 +326,6 @@ func newCertStateFromConfig(c *config.C, cipher string) (*CertState, error) {
return nil, err
}
if fips140.Enforced() && crt.Curve() != cert.Curve_P256 {
return nil, fmt.Errorf("pki: use of %s is not allowed in FIPS 140-only mode", crt.Curve())
}
switch crt.Version() {
case cert.Version1:
if v1 != nil {
@@ -420,7 +405,7 @@ func newCertState(dv cert.Version, v1, v2 cert.Certificate, pkcs11backed bool, p
//NOTE: We do not currently have a method to verify a public private key pair when the private key is in an hsm
} else {
if err := v1.VerifyPrivateKey(privateKeyCurve, privateKey); err != nil {
return nil, fmt.Errorf("private key is not a pair with public key in nebula cert: %w", err)
return nil, fmt.Errorf("private key is not a pair with public key in nebula cert")
}
}
@@ -428,7 +413,7 @@ func newCertState(dv cert.Version, v1, v2 cert.Certificate, pkcs11backed bool, p
if err != nil {
return nil, fmt.Errorf("error marshalling v1 certificate for handshake: %w", err)
}
ncs, err := newCipherSuite(v1.Curve(), pkcs11backed, cipher, fips140.Enforced())
ncs, err := newCipherSuite(v1.Curve(), pkcs11backed, cipher)
if err != nil {
return nil, err
}
@@ -445,7 +430,7 @@ func newCertState(dv cert.Version, v1, v2 cert.Certificate, pkcs11backed bool, p
//NOTE: We do not currently have a method to verify a public private key pair when the private key is in an hsm
} else {
if err := v2.VerifyPrivateKey(privateKeyCurve, privateKey); err != nil {
return nil, fmt.Errorf("private key is not a pair with public key in nebula cert: %w", err)
return nil, fmt.Errorf("private key is not a pair with public key in nebula cert")
}
}
@@ -453,7 +438,7 @@ func newCertState(dv cert.Version, v1, v2 cert.Certificate, pkcs11backed bool, p
if err != nil {
return nil, fmt.Errorf("error marshalling v2 certificate for handshake: %w", err)
}
ncs, err := newCipherSuite(v2.Curve(), pkcs11backed, cipher, fips140.Enforced())
ncs, err := newCipherSuite(v2.Curve(), pkcs11backed, cipher)
if err != nil {
return nil, err
}
-94
View File
@@ -1,94 +0,0 @@
package nebula
import (
"strings"
"testing"
"github.com/slackhq/nebula/cert"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestNewCipherSuite(t *testing.T) {
tests := []struct {
name string
curve cert.Curve
cipher string
fips140Enforced bool
wantErr string
// wantName is the full expected CipherSuite name (<DH>_<Cipher>_<Hash>),
// only checked when wantErr is empty. Asserting the whole name makes both
// the curve and cipher selection load-bearing.
wantName string
}{
{
name: "curve25519 aesgcm, not enforced",
curve: cert.Curve_CURVE25519,
cipher: "aesgcm",
wantName: "25519_AESGCM_SHA256",
},
{
name: "curve25519 chachapoly, not enforced",
curve: cert.Curve_CURVE25519,
cipher: "chachapoly",
wantName: "25519_ChaChaPoly_SHA256",
},
{
name: "p256 aesgcm, not enforced",
curve: cert.Curve_P256,
cipher: "aesgcm",
wantName: "P256_AESGCM_SHA256",
},
{
name: "p256 aesgcm, enforced is allowed",
curve: cert.Curve_P256,
cipher: "aesgcm",
fips140Enforced: true,
wantName: "P256_AESGCM_SHA256",
},
{
name: "curve25519 rejected when enforced",
curve: cert.Curve_CURVE25519,
cipher: "aesgcm",
fips140Enforced: true,
wantErr: "pki: use of Curve25519 is not allowed in FIPS 140-only mode",
},
{
name: "chachapoly rejected when enforced",
curve: cert.Curve_P256,
cipher: "chachapoly",
fips140Enforced: true,
wantErr: "pki: use of ChaChaPoly is not allowed in FIPS 140-only mode",
},
{
// Curve is checked before cipher, so a Curve25519+ChaChaPoly
// request reports the Curve25519 rejection.
name: "curve25519 chachapoly rejected on curve when enforced",
curve: cert.Curve_CURVE25519,
cipher: "chachapoly",
fips140Enforced: true,
wantErr: "pki: use of Curve25519 is not allowed in FIPS 140-only mode",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
cs, err := newCipherSuite(tt.curve, false, tt.cipher, tt.fips140Enforced)
if tt.wantErr != "" {
require.EqualError(t, err, tt.wantErr)
assert.Nil(t, cs)
return
}
require.NoError(t, err)
require.NotNil(t, cs)
assert.Equal(t, tt.wantName, string(cs.Name()))
})
}
}
func TestNewCipherSuiteUnsupportedCurve(t *testing.T) {
cs, err := newCipherSuite(cert.Curve(99), false, "aesgcm", false)
require.Error(t, err)
assert.True(t, strings.HasPrefix(err.Error(), "unsupported curve:"), "got: %v", err)
assert.Nil(t, cs)
}
+3 -7
View File
@@ -2,7 +2,6 @@ package nebula
import (
"context"
"crypto/fips140"
"errors"
"fmt"
"log/slog"
@@ -289,12 +288,9 @@ func (s *statsServer) buildRuntime(cfg statsConfig) ([]func(), *http.Server) {
Name: "info",
Help: "Version information for the Nebula binary",
ConstLabels: prometheus.Labels{
"version": s.buildVersion,
"goversion": runtime.Version(),
"boringcrypto": strconv.FormatBool(boringEnabled()),
"fips140Version": fips140.Version(),
"fips140Enabled": strconv.FormatBool(fips140.Enabled()),
"fips140Enforced": strconv.FormatBool(fips140.Enforced()),
"version": s.buildVersion,
"goversion": runtime.Version(),
"boringcrypto": strconv.FormatBool(boringEnabled()),
},
})
pr.MustRegister(g)