323 lines
12 KiB
Markdown
323 lines
12 KiB
Markdown
# QA Security Audit Report
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| Field | Value |
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|-------------|--------------------------------|
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| **Date** | 2026-03-24 |
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| **Image** | `charon:local` (Alpine 3.23.3) |
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| **Go** | 1.26.1 |
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| **Grype** | 0.110.0 |
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| **Trivy** | 0.69.1 |
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| **CodeQL** | Latest (SARIF v2.1.0) |
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---
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## Executive Summary
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The current `charon:local` image built on 2026-03-24 shows a significantly improved
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security posture compared to the CI baseline. Three previously tracked SECURITY.md
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vulnerabilities are now **resolved** due to Go 1.26.1 compilation and Alpine package
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updates. Two new medium/low findings emerged. No CRITICAL or HIGH active
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vulnerabilities remain in the unignored scan results.
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| Category | Critical | High | Medium | Low | Total |
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|------------------------|----------|------|--------|-----|-------|
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| **Active (unignored)** | 0 | 0 | 4 | 2 | 6 |
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| **Ignored (documented)**| 0 | 4 | 0 | 0 | 4 |
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| **Resolved since last audit** | 1 | 4 | 1 | 0 | 6 |
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---
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## Scans Executed
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| # | Scan | Tool | Result |
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|---|-------------------------------|-----------|----------------------|
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| 1 | Trivy Filesystem | Trivy | 0 findings (no lang-specific files detected) |
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| 2 | Docker Image (SBOM + Grype) | Syft/Grype| 6 active, 8 ignored |
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| 3 | Trivy Image Report | Trivy | 1 HIGH (stale Feb 25 report; resolved in current build) |
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| 4 | CodeQL Go | CodeQL | 1 finding (false positive — see below) |
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| 5 | CodeQL JavaScript | CodeQL | 0 findings |
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| 6 | GORM Security Scanner | Custom | PASSED (0 issues, 2 info) |
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| 7 | Lefthook / Pre-commit | Lefthook | Configured (project uses `lefthook.yml`, not `.pre-commit-config.yaml`) |
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---
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## Active Findings (Unignored)
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### CVE-2025-60876 — BusyBox wget HTTP Request Smuggling
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| Field | Value |
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|------------------|-------|
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| **Severity** | Medium (CVSS 6.5) |
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| **Package** | `busybox` 1.37.0-r30 (Alpine APK) |
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| **Affected** | `busybox`, `busybox-binsh`, `busybox-extras`, `ssl_client` (4 matches) |
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| **Fix Available** | No |
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| **Classification** | AWAITING UPSTREAM |
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| **EPSS** | 0.00064 (0.20 percentile) |
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**Description**: BusyBox wget through 1.37 accepts raw CR/LF and other C0 control bytes
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in the HTTP request-target, allowing request line splitting and header injection (CWE-284).
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**Risk Assessment**: Low practical risk. Charon does not invoke `busybox wget` in its
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application logic. The vulnerable `wget` applet would need to be manually invoked inside
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the container with attacker-controlled URLs.
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**Remediation**: Monitor Alpine 3.23 for a patched `busybox` APK. No action required
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until upstream ships a fix.
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---
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### CVE-2026-26958 / GHSA-fw7p-63qq-7hpr — edwards25519 MultiScalarMult Invalid Results
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| Field | Value |
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|------------------|-------|
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| **Severity** | Low (CVSS 1.7) |
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| **Package** | `filippo.io/edwards25519` v1.1.0 |
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| **Location** | CrowdSec binaries (`/usr/local/bin/crowdsec`, `/usr/local/bin/cscli`) |
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| **Fix Available** | v1.1.1 |
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| **Classification** | AWAITING UPSTREAM |
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| **EPSS** | 0.00018 (0.04 percentile) |
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**Description**: `MultiScalarMult` produces invalid results or undefined behavior if
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the receiver is not the identity point. This is a rarely used, advanced API.
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**Risk Assessment**: Minimal. CrowdSec does not directly expose edwards25519
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`MultiScalarMult` to external input. The fix exists at v1.1.1 but requires CrowdSec
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to rebuild with the updated dependency.
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**Remediation**: Awaiting CrowdSec upstream release with updated dependency. No
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action available for Charon maintainers.
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---
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## Ignored Findings (Documented with Justification)
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These findings are suppressed in the Grype configuration with documented risk
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acceptance rationale. All are in third-party binaries bundled in the container;
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none are in Charon's own code.
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### CVE-2026-2673 — OpenSSL TLS 1.3 Key Exchange Group Downgrade
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| Field | Value |
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|------------------|-------|
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| **Severity** | High (CVSS 7.5) |
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| **Package** | `libcrypto3` / `libssl3` 3.5.5-r0 |
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| **Matches** | 2 (libcrypto3, libssl3) |
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| **Classification** | ALREADY DOCUMENTED · AWAITING UPSTREAM |
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Charon terminates TLS at the Caddy layer; the Go backend does not act as a raw
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TLS 1.3 server. Alpine 3.23 still ships 3.5.5-r0. Risk accepted pending Alpine patch.
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---
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### GHSA-6g7g-w4f8-9c9x — DoS in buger/jsonparser (CrowdSec)
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| Field | Value |
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|------------------|-------|
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| **Severity** | High (CVSS 7.5) |
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| **Package** | `github.com/buger/jsonparser` v1.1.1 |
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| **Matches** | 2 (crowdsec, cscli binaries) |
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| **Fix Available** | v1.1.2 |
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| **Classification** | ALREADY DOCUMENTED · AWAITING UPSTREAM |
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Charon does not use this package directly. The vector requires reaching CrowdSec's
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internal JSON processing pipeline. Risk accepted pending CrowdSec upstream fix.
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---
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### GHSA-jqcq-xjh3-6g23 / GHSA-x6gf-mpr2-68h6 / CVE-2026-4427 — DoS in pgproto3/v2 (CrowdSec)
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| Field | Value |
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|------------------|-------|
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| **Severity** | High (CVSS 7.5) |
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| **Package** | `github.com/jackc/pgproto3/v2` v2.3.3 |
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| **Matches** | 4 (2 GHSAs × 2 binaries) |
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| **Fix Available** | No (v2 is archived/EOL) |
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| **Classification** | ALREADY DOCUMENTED · AWAITING UPSTREAM |
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pgproto3/v2 is archived with no fix planned. CrowdSec must migrate to pgx/v5.
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Charon uses SQLite, not PostgreSQL; this code path is unreachable in standard
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deployment.
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---
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## Resolved Findings (Since Last SECURITY.md Update)
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The following vulnerabilities documented in SECURITY.md are no longer detected in the
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current image build. **SECURITY.md should be updated to move these to "Patched
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Vulnerabilities".**
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### CVE-2025-68121 — Go Stdlib Critical in CrowdSec (RESOLVED)
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| Field | Value |
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|------------------|-------|
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| **Previous Severity** | Critical |
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| **Resolution** | CrowdSec binaries now compiled with Go 1.26.1 (was Go 1.25.6) |
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| **Verified** | Not detected in Grype scan of current image |
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---
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### CHARON-2025-001 — CrowdSec Go Stdlib CVE Cluster (RESOLVED)
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| Field | Value |
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|------------------|-------|
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| **Previous Severity** | High |
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| **Aliases** | CVE-2025-58183, CVE-2025-58186, CVE-2025-58187, CVE-2025-61729, CVE-2026-25679, CVE-2025-61732, CVE-2026-27142, CVE-2026-27139 |
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| **Resolution** | CrowdSec binaries now compiled with Go 1.26.1 |
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| **Verified** | None of the aliased CVEs detected in Grype scan |
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---
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### CVE-2026-27171 — zlib CPU Exhaustion (RESOLVED)
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| Field | Value |
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|------------------|-------|
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| **Previous Severity** | Medium |
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| **Resolution** | Alpine now ships `zlib` 1.3.2-r0 (fix threshold: 1.3.2) |
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| **Verified** | Not detected in Grype scan; zlib 1.3.2-r0 confirmed in SBOM |
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---
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### CVE-2026-33186 — gRPC-Go Authorization Bypass (RESOLVED)
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| Field | Value |
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|------------------|-------|
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| **Previous Severity** | Critical |
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| **Packages** | `google.golang.org/grpc` v1.74.2 (CrowdSec), v1.79.1 (Caddy) |
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| **Resolution** | Upstream releases now include patched gRPC (>= v1.79.3) |
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| **Verified** | Not detected in Grype scan; ignore rule present but no match |
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---
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### GHSA-69x3-g4r3-p962 / CVE-2026-25793 — Nebula ECDSA Malleability (RESOLVED)
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| Field | Value |
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|------------------|-------|
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| **Previous Severity** | High |
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| **Package** | `github.com/slackhq/nebula` v1.9.7 in Caddy |
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| **Resolution** | Caddy now ships with nebula >= v1.10.3 |
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| **Verified** | Not detected in Grype scan; Trivy image report from Feb 25 had this but current build does not |
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> **Note**: The stale Trivy image report (`trivy-image-report.json`, dated 2026-02-25) still
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> shows CVE-2026-25793. This report predates the current build and should be regenerated.
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---
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### GHSA-479m-364c-43vc — goxmldsig XML Signature Bypass (RESOLVED)
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| Field | Value |
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|------------------|-------|
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| **Previous Severity** | High |
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| **Package** | `github.com/russellhaering/goxmldsig` v1.5.0 in Caddy |
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| **Resolution** | Caddy now ships with goxmldsig >= v1.6.0 |
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| **Verified** | Not detected in Grype scan; ignore rule present but no match |
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---
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## CodeQL Analysis
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### go/cookie-secure-not-set — FALSE POSITIVE
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| Field | Value |
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|------------------|-------|
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| **Severity** | Medium (CodeQL) |
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| **File** | `backend/internal/api/handlers/auth_handler.go:152` |
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| **Classification** | FALSE POSITIVE (stale SARIF) |
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**Finding**: CodeQL reports "Cookie does not set Secure attribute to true" at line 152.
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**Verification**: The `setSecureCookie` function at line 148-156 calls `c.SetCookie()`
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with `secure: true` (6th positional argument). The Secure attribute IS set correctly.
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This SARIF was generated from a previous code version and does not reflect the current
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source. **The CodeQL SARIF files should be regenerated.**
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### JavaScript / JS
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No findings. Both `codeql-results-javascript.sarif` and `codeql-results-js.sarif` contain
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0 results.
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---
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## GORM Security Scanner
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| Metric | Value |
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|------------|-------|
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| **Result** | PASSED |
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| **Files** | 43 Go files (2,396 lines) |
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| **Critical** | 0 |
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| **High** | 0 |
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| **Medium** | 0 |
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| **Info** | 2 (missing indexes on foreign keys in `UserPermittedHost`) |
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The 2 informational suggestions (`UserID` and `ProxyHostID` missing `gorm:"index"` in
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`backend/internal/models/user.go:130-131`) are performance recommendations, not security
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issues. They do not block this audit.
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---
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## CI vs Local Scan Discrepancy
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The CI reported **3 Critical, 5 High, 1 Medium**. The local scan on the freshly built
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image reports **0 Critical, 0 High, 4 Medium, 2 Low** (active) plus **4 High** (ignored).
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**Root causes for the discrepancy:**
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1. **Resolved vulnerabilities**: 3 Critical and 4 High findings were resolved by Go 1.26.1
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compilation and upstream Caddy/CrowdSec dependency updates since the CI image was built.
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2. **Grype ignore rules**: The local scan applies documented risk acceptance rules that
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suppress 4 High findings in third-party binaries. CI (Trivy) does not use these rules.
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3. **Stale CI artifacts**: The `trivy-image-report.json` dates from 2026-02-25 and does
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not reflect the current image state. The `codeql-results-go.sarif` references code that
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has since been fixed.
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---
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## Recommended Actions
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### Immediate (This Sprint)
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1. **Update SECURITY.md**: Move CVE-2025-68121, CHARON-2025-001, and CVE-2026-27171 to
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a "Patched Vulnerabilities" section. Add CVE-2025-60876 and CVE-2026-26958 as new
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known vulnerabilities.
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2. **Regenerate stale scan artifacts**: Re-run Trivy image scan and CodeQL analysis to
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produce current SARIF/JSON files. The existing files predate fixes and produce
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misleading CI results.
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3. **Clean up Grype ignore rules**: Remove ignore entries for vulnerabilities that are
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no longer detected (CVE-2026-33186, GHSA-69x3-g4r3-p962, GHSA-479m-364c-43vc).
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Stale ignore rules obscure the actual security posture.
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### Next Release
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4. **Monitor Alpine APK updates**: Watch for patched `busybox` (CVE-2025-60876) and
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`openssl` (CVE-2026-2673) packages in Alpine 3.23.
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5. **Monitor CrowdSec releases**: Watch for CrowdSec builds with updated
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`filippo.io/edwards25519` >= v1.1.1, `buger/jsonparser` >= v1.1.2, and
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`pgx/v5` migration (replacing pgproto3/v2).
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6. **Monitor Go 1.26.2-alpine**: When available, bump `GO_VERSION` to pick up any
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remaining stdlib patches.
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### Informational (Non-Blocking)
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7. **GORM indexes**: Consider adding `gorm:"index"` to `UserID` and `ProxyHostID` in
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`UserPermittedHost` for query performance.
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---
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## Gotify Token Review
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Verified: No Gotify application tokens appear in scan output, log artifacts, test results,
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API examples, or URL query parameters. All diagnostic output is clean.
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---
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## Conclusion
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The Charon container image security posture has materially improved. Six previously known
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vulnerabilities are now resolved through Go toolchain and dependency updates. The remaining
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active findings are medium/low severity, reside in Alpine base packages and CrowdSec
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third-party binaries, and have no available fixes. No vulnerabilities exist in Charon's
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own application code. GORM and CodeQL scans confirm the backend code is clean.
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