[Security Review] Daily Security Review

[github-actions[bot]]

📊 Executive Summary

Focused review of AWF network, container, and input-validation controls. No new exploitable vulnerabilities found. The npm audit check could not run (registry returned a self-signed certificate error), so dependency risk is unassessed. This was a targeted review, not the full evidence sweep the task template asked for. The sections below say where coverage is thin.

🔍 Findings from Firewall Escape Test

The pre-fetched /tmp/gh-aw/escape-test-summary.txt contains only workflow conclusion logs. The "Secret Digger (Copilot)" run ended with a noop: the agent refused a prompt-injection-style task and performed no investigation. The file shows no successful escapes, but it also records no actual escape attempts.

🛡️ Architecture Security Analysis

• Network: containers/agent/setup-iptables.sh ends the OUTPUT chain with a final DROP for TCP (line 480) and UDP (line 482). Squid forward-proxy ACLs filter allowed traffic. NET_ADMIN is held only by the awf-iptables-init container (cap_add: NET_ADMIN, NET_RAW, cap_drop: ALL), as asserted in src/services/agent-service-build.test.ts:110-118.
• Container: src/services/agent-service.ts:64-80 gives the agent SYS_CHROOT and SYS_ADMIN. The comments say these are dropped with capsh before user code runs. The agent also drops NET_RAW, SYS_PTRACE, SYS_MODULE, SYS_RAWIO and MKNOD, and sets no-new-privileges, a custom seccomp profile, pids_limit and mem_limit.
• Domain/input: src/domain-patterns.ts validates patterns and throws on invalid ones.

⚠️ Threat Model

STRIDE	Threat	Rating
E	SYS_ADMIN exists during agent startup, so a failure in the capsh drop in entrypoint.sh would leave it on.	Medium impact, low likelihood
E	apparmor:unconfined removes a defence-in-depth layer (agent-service.ts:76).	Medium
I	Credential exposure to the agent, mitigated by the API proxy and hidepid=2 on /proc.	Low
D	Resource limits are set (6g memory, 1000 pids), but there is no disk or CPU quota.	Low
T	The default allowlist of DNS servers is limited.	Low

🎯 Attack Surface Map

Surface	Location	Risk
Squid ACL (domain parsing)	src/domain-patterns.ts	Medium
iptables rules	containers/agent/setup-iptables.sh	Low
Entrypoint privilege drop	containers/agent/entrypoint.sh (1837 lines)	Medium
Docker socket (--enable-dind)	src/services/agent-volumes.ts	High when enabled

📋 Evidence Collection

Commands run: grep over src/services/agent-service.ts for capabilities and security_opt, cat src/host-iptables.ts, and grep for DROP|REJECT in setup-iptables.sh. npm audit --omit=dev failed with a certificate error. entrypoint.sh and the seccomp profile were not read line by line.

✅ Recommendations

• Medium: Add a startup self-test that fails closed if CapEff still includes SYS_ADMIN or SYS_CHROOT when user code starts.
• Medium: Run dependency auditing in CI, where the registry is reachable.
• Low: Replace apparmor:unconfined with a custom AppArmor profile that allows only the procfs mount.
• Low: Document the risk of --enable-dind (the Docker socket inside the agent container).

📈 Security Metrics

About 2,500 lines of security-critical code were identified, and only a fraction was read directly. Five attack surfaces were identified. Threat-model coverage is partial (all six STRIDE categories considered, with limited evidence).

Generated by Daily Security Review and Threat Modeling · copilot · auto · 18.2 AIC · ⊞ 10.9K · ◷

• expires on Oct 16, 2026, 12:44 PM UTC