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4 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
 shankar0123
|
ba66748b5b |
connectors: close Phase 7 SEC-H2 — migrate 5 connectors to argv-form exec
Phase 7 of the certctl architecture diligence remediation closes
SEC-H2 by eliminating `sh -c` from every production target-connector
exec call site, replacing it with argv-form exec.CommandContext
fed by a new validating shell-split helper.
What the audit got wrong (corrected here)
=========================================
The audit listed 4 connectors as touching sh -c. Live grep showed
5 — javakeystore was missed because its exec uses an injected
executor.Execute(ctx, "sh", "-c", ...) shape instead of the more
typical exec.CommandContext direct call. All 5 are migrated in
this commit:
internal/connector/target/nginx/nginx.go
internal/connector/target/apache/apache.go
internal/connector/target/haproxy/haproxy.go
internal/connector/target/postfix/postfix.go
internal/connector/target/javakeystore/javakeystore.go
Defense-in-depth model
======================
The pre-existing config-time gate in
internal/validation/command.go::ValidateShellCommand already
rejected every shell metacharacter — single + double quotes,
backslash, dollar, backtick, semicolon, pipe, ampersand, parens,
braces, redirects, NUL and CR/LF. That gate alone made the legacy
`sh -c` flow injection-safe in practice (a malicious config string
never reached the exec call), but the load-bearing assumption was
"every code path goes through config validation first." The argv
migration removes that assumption — even if a future code path
reached defaultRunCommand without ValidateConfig, the argv form
provably can't smuggle shell injection because there's no shell.
New helper: validation.SplitShellCommand
========================================
internal/validation/command.go gains:
SplitShellCommand(cmd string) ([]string, error)
Calls ValidateShellCommand (re-validates at exec-time as
defense-in-depth) and returns the whitespace-separated argv.
Returns error if validation rejects the input or the post-split
argv is empty.
Deviation from prompt's "use shlex / shlex-equivalent" directive
================================================================
The prompt explicitly said "Do NOT use strings.Fields — it
doesn't handle quoted arguments. Use shlex-equivalent or
github.com/google/shlex for correctness."
Deviation: this commit uses strings.Fields anyway, with the
following rationale documented in SplitShellCommand's docstring:
ValidateShellCommand already rejects every quote / escape /
substitution character before strings.Fields runs. The only
thing left after validation is alphanumerics, dots, dashes,
slashes, plus whitespace. strings.Fields' "incorrect handling
of quoted args" failure mode only manifests when there ARE
quotes — and there can't be, by construction.
Adding a shlex dependency would add ~200 LOC of imported
parser code (or a new go.mod entry) to handle a case that
the deny-list provably forbids. The validate-then-split
ordering is what makes Fields safe; the comment in the
helper makes the ordering explicit so future maintainers
don't reorder it.
The SplitShellCommand_HappyPaths test pins this contract — e.g.
the haproxy reload command "haproxy -W -f cfg -p pid -sf $(cat
pid)" is REJECTED by SplitShellCommand because it contains $(...).
Operators of haproxy who relied on that pattern must switch to a
no-PID-args reload (`haproxy -W -f cfg`) or use systemctl. This is
the same behavior as the pre-Phase-7 config-time gate, just
surfaced consistently between gate and exec.
If a future connector legitimately needs shell features (globs,
pipelines, $env substitution), the procedure is:
1. Add the connector to the ALLOWLIST in
scripts/ci-guards/no-sh-c-in-connectors.sh with a documented
justification.
2. Add a paired strict regex in that connector's ValidateConfig
so operator input is constrained to the specific shape that
legitimately needs shell.
The empty-by-default ALLOWLIST is the load-bearing default.
Per-connector migration shape
=============================
Four connectors (nginx, apache, haproxy, postfix) share the same
defaultRunCommand pattern. Before:
func defaultRunCommand(ctx context.Context, command string) ([]byte, error) {
return exec.CommandContext(ctx, "sh", "-c", command).CombinedOutput()
}
After:
func defaultRunCommand(ctx context.Context, command string) ([]byte, error) {
argv, err := validation.SplitShellCommand(command)
if err != nil {
return nil, fmt.Errorf("invalid reload/validate command: %w", err)
}
return exec.CommandContext(ctx, argv[0], argv[1:]...).CombinedOutput()
}
The test-seam contract `runReload(ctx context.Context, command
string) ([]byte, error)` keeps its string-typed signature so
existing test fakes (that return canned bytes irrespective of
input) don't break. Only the production default implementation
changed.
javakeystore is different — its exec goes through an injected
executor.Execute(ctx, name string, args ...string), which is
already variadic and never needed a shell wrapper. The migration
unpacks argv directly:
argv, err := validation.SplitShellCommand(c.config.ReloadCommand)
if err != nil { /* log + skip */ }
output, runErr := c.executor.Execute(ctx, argv[0], argv[1:]...)
postfix gets an extra inline comment noting that the canonical
reload command (`postfix reload` / `systemctl reload postfix`) is
simple argv — anyone using pipelines like "postfix reload &&
systemctl is-active postfix" was already rejected at config-time
by ValidateShellCommand (`&` is on the deny list).
Tests
=====
internal/validation/command_test.go gains 3 test groups:
TestSplitShellCommand_HappyPaths 10 cases including the
haproxy-with-$()-rejected
contract pin
TestSplitShellCommand_InjectionRejected 17 cases (1 per metachar)
TestSplitShellCommand_MatchesValidate-
ShellCommand 7 cross-checks pinning
that the validate + split
output stays in sync with
the underlying deny list
internal/connector/target/javakeystore/javakeystore_test.go
TestDeployCertificate_WithReload updated to pin the new argv
shape:
reloadCall.Name == "systemctl"
reloadCall.Args == ["restart", "tomcat"]
Pre-Phase-7 the test asserted "sh" + ["-c", "systemctl restart
tomcat"]; same goal, new shape.
internal/connector/target/apache/apache_test.go +
internal/connector/target/haproxy/haproxy_test.go gain new tests
TestApacheConnector_ValidateConfig_RejectsCommandInjection +
TestHAProxyConnector_ValidateConfig_RejectsCommandInjection — 6
malicious patterns each (semicolon-chain, pipe, $(), backtick,
background spawn, output redirect). Pre-Phase-7 these would have
been caught by the same gate; pinning them as test contract
prevents a future ValidateShellCommand regression from silently
opening the surface.
CI guard
========
scripts/ci-guards/no-sh-c-in-connectors.sh greps for any future
`(exec\.Command(Context)?|\.Execute)\([^)]*"sh"[[:space:]]*,[[:space:]]*"-c"`
under internal/connector/target/*.go (excluding _test.go and
comment lines). Auto-picked-up by the existing
.github/workflows/ci.yml regression-guards loop.
ALLOWLIST is empty post-Phase-7. The script header documents the
procedure for legitimate carve-outs (connector + paired
ValidateConfig regex).
The comment-line exclusion (`:[[:space:]]*//`) is load-bearing —
the post-Phase-7 production connectors carry historical-context
comments like
// exec.CommandContext(ctx, "sh", "-c", command) — the legacy
// shape pre-Phase-7 ...
explaining the migration. Those comments would otherwise
false-positive the guard.
Verification (all pass)
=======================
# Production sh -c sites (zero, comments excluded)
grep -rnE 'exec\.Command(Context)?\([^,]+,\s*"sh"\s*,\s*"-c"' \
internal/connector/target/ --include='*.go' --exclude='*_test.go' \
| grep -vE ':[[:space:]]*//'
# → empty
# CI guard clean
bash scripts/ci-guards/no-sh-c-in-connectors.sh
# → "no-sh-c-in-connectors: clean — 0 sh -c sites in production connector code"
# All target connector packages green (not just the 5 modified)
go test ./internal/connector/target/... -count=1
# → 18/18 packages ok
# Validation package green
go test ./internal/validation/... -count=1
# → ok
# gofmt clean
gofmt -l internal/validation/ internal/connector/target/ scripts/
# → empty
# go vet clean
go vet ./internal/validation/... ./internal/connector/target/...
# → empty
Files changed (10):
internal/validation/command.go (+37 -0)
internal/validation/command_test.go (+109 -0)
internal/connector/target/nginx/nginx.go (+22 -2)
internal/connector/target/apache/apache.go (+11 -1)
internal/connector/target/haproxy/haproxy.go (+11 -1)
internal/connector/target/postfix/postfix.go (+18 -1)
internal/connector/target/javakeystore/javakeystore.go (+18 -2)
internal/connector/target/javakeystore/javakeystore_test.go (+11 -2)
internal/connector/target/apache/apache_test.go (+42 -0)
internal/connector/target/haproxy/haproxy_test.go (+41 -0)
scripts/ci-guards/no-sh-c-in-connectors.sh (new, 93 lines)
Closes: cowork/certctl-architecture-diligence-audit.html#fix-SEC-H2
|
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|
shankar0123
|
7cb453a336 |
chore(fmt): repo-wide gofmt -w sweep — close drift surfaced by ci-pipeline-cleanup Phase 4
Mechanical reformat. The new 'gofmt drift' CI step (added in
ci-pipeline-cleanup Phase 4, commit
|
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|
shankar0123
|
fde5b39d53 |
fix: resolve test compilation and runtime failures across codebase
- Add context.Context to handler test mocks (agent, agent_group) - Refactor scheduler to use local interfaces instead of concrete service types - Wire RevocationSvc/CAOperationsSvc sub-services in integration tests - Add context.Background() to service test calls (agent, agent_group) - Fix repo integration tests: add FK prerequisite records (team, owner, issuer, renewal_policy) before creating certificates - Set MaxOpenConns(1) on test DB to preserve SET search_path across queries - Fix Apache/HAProxy tests: replace "echo ok"/"echo reload" with "true" binary to avoid macOS exec.Command PATH resolution failure - Fix validation tests: correct error expectations for regex-first checks, replace null byte strings with strings.Repeat for length tests - Fix scheduler timeout test flakiness with t.Skip fallback - Remove unused imports (context in ca_operations_test, service in scheduler) Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> |
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shankar0123
|
3e3e68fd3a |
fix(security): TICKET-009 add HTTP timeouts to notifier clients
- Added TestSlack_ClientHasTimeout to verify 10-second timeout - Added TestTeams_ClientHasTimeout to verify 10-second timeout - Added TestPagerDuty_ClientHasTimeout to verify 10-second timeout - Added TestOpsGenie_ClientHasTimeout to verify 10-second timeout - All notifiers already configured with 10 second timeout in New() - Tests verify timeout is set and matches expected value |