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CVE-2024-27081
Path Traversal in esphome (CVE-2024-27081)
Summary
path traversal in esphome (CVE-2024-27081). Successful exploitation can lead to full system takeover. Mitigation: upgrade to `2024.2.1` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2024-27081** has been found in esphome.
Successful exploitation can lead to full system takeover. CVSS score: ?/10.
What to do: upgrade esphome to **2024.2.1** or later.
If unsure, ask your IT team or search "esphome CVE-2024-27081" on the vendor's site.
CVE-2024-27081 (esphome) — CWE-22 /
Attack vector: remote (network-reachable) / no user interaction
Patched: `2024.2.1` — 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
**Path traversal** (CWE-22) exists in esphome.
📍 Affected scope
esphome — .
🔥 Severity
Severity: ?. Successful exploitation can lead to full system takeover
🔧 How to fix
Update to **2024.2.1**.
🛡️ 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 'esphome' .` 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 'esphome' . | 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 `esphome` 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 esphome to 2024.2.1ステージング環境で 2024.2.1 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
esphome
[{"type":"ECOSYSTEM","events":[{"introduced":"2023.12.9"},{"fixed":"2024.2.1"}]}]
References
- advisory https://nvd.nist.gov/vuln/detail/CVE-2024-27081
- advisory https://github.com/advisories/GHSA-8p25-3q46-8q2p
- package https://github.com/esphome/esphome
- package https://pypi.org/project/esphome
- web https://github.com/esphome/esphome/security/advisories/GHSA-8p25-3q46-8q2p
- web https://github.com/esphome/esphome/commit/d814ed1d4adc71fde47c4df41215bee449884513