Files
certctl/docs
shankar0123 b16e5b5e97 docs(ssh): operator playbook for InsecureIgnoreHostKey design choice
Closes Top-10 fix #7 of the 2026-05-02 deployment-target audit
re-run (see cowork/deployment-target-audit-2026-05-02-rerun/
RESULTS.md). Pre-fix, the SSH connector's
ssh.InsecureIgnoreHostKey() at internal/connector/target/ssh/
ssh.go (realSSHClient.Connect) had only an inline comment
justifying the design choice. An acquirer's diligence engineer
reading the connector cold pattern-matches "MITM hazard" without
seeing the comment.

This commit lands a doc-side operator playbook in
docs/connectors.md SSH section covering:

1. Why the connector accepts any host key (operator-configured
   target infrastructure; mirrors network scanner's
   InsecureSkipVerify and F5's Insecure flag).
2. Threat model the choice accepts (passive eavesdropper on
   operator-controlled network; layered SSH-key auth limits
   blast radius).
3. Threat model the choice does NOT accept (public-internet
   ephemeral hosts, multi-tenant networks, strict MITM-
   resistance regulatory requirements).
4. Mitigations operators can layer (custom SSHClient via
   NewWithClient + golang.org/x/crypto/ssh/knownhosts; SSH
   certificate authentication via @cert-authority pinning;
   network segmentation; per-target key rotation).
5. When to NOT use the SSH connector (regulatory environments,
   dynamic IPs, multi-tenant networks).
6. V3-Pro forward path (built-in known_hosts management,
   tracked in WORKSPACE-ROADMAP.md).

Inline comment in ssh.go realSSHClient.Connect updated to
forward-reference the new doc subsection (no logic change; same
HostKeyCallback: ssh.InsecureIgnoreHostKey() call).

Same shape Bundle 8 used for "Operator playbook: keytool argv
password exposure" in docs/connectors.md JavaKeystore section.

No code-behavior changes. No test changes.

Verified locally:
- gofmt / go vet clean.
- go test -short ./internal/connector/target/ssh/...  green.

Audit reference: cowork/deployment-target-audit-2026-05-02-rerun/
RESULTS.md Top-10 fix #7.
2026-05-02 22:44:30 +00:00
..
2026-04-26 23:29:59 +00:00