Three coupled fixes that close a documented bypass of git-gate's
gitleaks pre-receive hook:
1. cred-proxy refuses git smart-HTTP push at runtime. Any path
ending in /git-receive-pack or /info/refs?service=git-receive-pack
returns 403 with a pointer at the bottle.git SSH path. Fetch
(upload-pack) is still allowed — the bypass we're closing is
push, where gitleaks is the load-bearing scanner. Hard guarantee.
2. The provisioner suppresses the cred-proxy `~/.gitconfig` insteadOf
rewrite for any host already declared in bottle.git. git-gate is
the canonical git path there; we don't write a competing rule
that would let `git clone https://<host>/...` succeed in ways
that confuse on push. Defense in depth — (1) is the hard guarantee.
3. cred-proxy routes its outbound HTTPS through pipelock. The
sidecar's environ now sets HTTPS_PROXY=<pipelock-url>, and the
image's entrypoint runs `update-ca-certificates` over the
per-bottle pipelock CA (docker cp'd into
/usr/local/share/ca-certificates/pipelock.crt before start) so
the proxy's HTTPS client trusts pipelock's bumped certs.
Consequence: pipelock's allowlist + body scanner now sit in the
cred-proxy egress path the same way they sit in front of direct
agent traffic. The cred-proxy upstream hosts (api.github.com,
github.com, gitea hosts, registry.npmjs.org) come OFF
pipelock's passthrough_domains. Only api.anthropic.com remains
on passthrough (LLM body content legitimately trips DLP).
PRD 0010 updated to reflect all three. Tests adjusted: the
"cred-proxy hosts go on passthrough" assertion in
test_pipelock_allowlist flips to "they don't", a new
TestIsGitPushRequest exercises the smart-HTTP refusal predicate,
and the gitconfig renderer tests cover the per-host suppression
matrix.
Mirrors DockerGitGate: build the image, docker create on the internal
network with --network-alias cred-proxy, docker cp the routes.json
into /run/cred-proxy/, attach the egress network, docker start. stop()
is idempotent.
Token values flow host env -> subprocess env -> sidecar env via
docker create -e NAME (no =VALUE on argv). The resolver fails early
with a clear pointer at the missing host env var name if any TokenRef
is unset.
Helpers (cred_proxy_container_name, cred_proxy_url) are agent-side
stable: the URL uses the network alias, not the slugged container
name, so the provisioner can write a fixed http://cred-proxy:9099/
URL regardless of which bottle is running.
didericis