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CVE-2024-3955
Code Injection in cbpi4 (CVE-2024-3955)
Summary
code injection in cbpi4 (CVE-2024-3955). Successful exploitation can lead to full system takeover. Mitigation: upgrade to `4.4.1.a1` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2024-3955** has been found in cbpi4.
Successful exploitation can lead to full system takeover. CVSS score: ?/10.
What to do: upgrade cbpi4 to **4.4.1.a1** or later.
If unsure, ask your IT team or search "cbpi4 CVE-2024-3955" on the vendor's site.
CVE-2024-3955 (cbpi4) — CWE-94 /
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Patched: `4.4.1.a1` — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
❓ What is the problem
**arbitrary code execution** (CWE-94) exists in cbpi4.
📍 Affected scope
cbpi4 — .
🔥 Severity
Severity: ?. Successful exploitation can lead to full system takeover
🔧 How to fix
Update to **4.4.1.a1**.
🛡️ Workaround
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
🔍 Detection
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run `grep -r 'cbpi4' .` against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response Actions (7 steps)
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'cbpi4' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で `cbpi4` を grep し、稼働しているサービス・バージョンを把握する。
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6Apply patch patch
Upgrade cbpi4 to 4.4.1.a1ステージング環境で 4.4.1.a1 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスと、Step 3 で見つけた異常検知の続報チェックを含めること。
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7Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番では Step 3 と同じログクエリでアラート再発が無いか継続監視。
Affected packages
PyPI
cbpi4
[{"type":"ECOSYSTEM","events":[{"introduced":"4.0.0.58"},{"fixed":"4.4.1.a1"}]}]
References
- advisory https://nvd.nist.gov/vuln/detail/CVE-2024-3955
- advisory https://github.com/advisories/GHSA-4f92-w438-f484
- package https://github.com/PiBrewing/craftbeerpi4
- package https://pypi.org/project/cbpi4
- web https://github.com/PiBrewing/craftbeerpi4/issues/132
- web https://cert.pl/en/posts/2024/05/CVE-2024-3955
- web https://cert.pl/posts/2024/05/CVE-2024-3955