Charon/docs/reports/pr1_backend_impl_status.md

PR-1 Backend Implementation Status

Date: 2026-02-18 Scope: PR-1 backend high-risk findings only (go/log-injection, go/cookie-secure-not-set)

Files Touched (Backend PR-1)

• backend/internal/api/handlers/auth_handler.go
• backend/internal/api/handlers/backup_handler.go
• backend/internal/api/handlers/crowdsec_handler.go
• backend/internal/api/handlers/docker_handler.go
• backend/internal/api/handlers/emergency_handler.go
• backend/internal/api/handlers/proxy_host_handler.go
• backend/internal/api/handlers/security_handler.go
• backend/internal/api/handlers/settings_handler.go
• backend/internal/api/handlers/uptime_handler.go
• backend/internal/api/handlers/user_handler.go
• backend/internal/api/middleware/emergency.go
• backend/internal/cerberus/cerberus.go
• backend/internal/cerberus/rate_limit.go
• backend/internal/crowdsec/console_enroll.go
• backend/internal/crowdsec/hub_cache.go
• backend/internal/crowdsec/hub_sync.go
• backend/internal/server/emergency_server.go
• backend/internal/services/backup_service.go
• backend/internal/services/emergency_token_service.go
• backend/internal/services/mail_service.go
• backend/internal/services/manual_challenge_service.go
• backend/internal/services/uptime_service.go

Diff Inspection Outcome

Backend PR-1 remediations were completed with focused logging hardening in scoped files:

• user-influenced values at flagged sinks sanitized or removed from log fields
• residual sink lines were converted to static/non-tainted log messages where required by CodeQL taint flow
• cookie secure logic remains enforced in auth_handler.go (secure := true path)

No PR-2/PR-3 remediation work was applied in this backend status slice.

Commands Run

1. Targeted backend tests (changed backend areas)

   • go test ./internal/services -count=1
   • go test ./internal/server -count=1
   • go test ./internal/api/handlers -run ProxyHost -count=1
   • Result: passed

2. CI-aligned Go CodeQL scan

   • Task: Security: CodeQL Go Scan (CI-Aligned) [~60s]
   • Result: completed
   • Output artifact: /projects/Charon/codeql-results-go.sarif

3. SARIF verification (post-final scan)

   • jq -r '.runs[0].results | length' /projects/Charon/codeql-results-go.sarif

   • Result: 0

   • jq rule checks for:

     • go/log-injection
     • go/cookie-secure-not-set

   • Result: no matches for both rules

PR-1 Backend Status

• go/log-injection: cleared for current backend PR-1 scope in latest CI-aligned local SARIF.
• go/cookie-secure-not-set: cleared in latest CI-aligned local SARIF.

Remaining Blockers

• None.

Final Status

DONE