Files
molecule-core/workspace-server
core-be fd545a332b harden(provisioner): denylist SCM-write tokens from tenant workspace env (forensic #145)
Tenant workspace containers run agent-controlled code and must never
receive a Git SCM write credential — agents structurally lacking
merge/approve creds is why the two-eyes review gate is self-bypass-proof
against forged-approval injection.

Latent path: handlers.loadPersonaEnvFile() merges a per-role persona
GITEA_TOKEN into cfg.EnvVars when MOLECULE_PERSONA_ROOT is set on a
tenant host; it then flowed unfiltered through buildContainerEnv()
(local Docker) and CPProvisioner.Start() (tenant EC2). Inert today
(persona dirs are operator-host-only) but unguarded — and the
pre-existing TestBuildContainerEnv_CustomEnvVarsAppended test actually
asserted GITHUB_TOKEN passed through verbatim.

Adds a narrow, auditable exact-match denylist (isSCMWriteTokenKey:
GITEA/GITHUB/GH/GITLAB/GL/BITBUCKET _TOKEN) applied by construction in
both env paths, plus negative-assertion tests covering the normal path
and a persona-file-merge simulation. Non-credential persona identity
(GITEA_USER, GITEA_USER_EMAIL) is intentionally preserved. No
provisioner refactor.

Tracking: molecule-ai/internal#438

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-15 18:43:18 -07:00
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