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CVE-2024-0727
medium
CVSS 5.5
Vulnerability in cryptography (CVE-2024-0727)
Summary
vulnerability in cryptography (CVE-2024-0727). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to `42.0.2` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2024-0727** has been found in cryptography.
Risk of unauthorized operations or information disclosure. CVSS score: 5.5/10.
What to do: upgrade cryptography to **42.0.2** or later.
If unsure, ask your IT team or search "cryptography CVE-2024-0727" on the vendor's site.
CVE-2024-0727 (cryptography) — CWE-476 / CVSS v3 5.5
Attack vector: local / unauthenticated
Patched: `42.0.2` — 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
**A vulnerability** (CWE-476) exists in cryptography.
📍 Affected scope
cryptography — .
🔥 Severity
Severity: Medium (CVSS 5.5/10). Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **42.0.2**.
🛡️ 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 'cryptography' .` 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 'cryptography' . | 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 `cryptography` を grep し、稼働しているサービス・バージョンを把握する。
-
6Apply patch patch
Upgrade cryptography to 42.0.2ステージング環境で 42.0.2 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。
-
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
pip
cryptography
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"42.0.2"}]}]
References
- web https://github.com/openssl/openssl/commit/09df4395b5071217b76dc7d3d2e630eb8c5a79c2
- web https://github.com/openssl/openssl/commit/775acfdbd0c6af9ac855f34969cdab0c0c90844a
- web https://github.com/openssl/openssl/commit/d135eeab8a5dbf72b3da5240bab9ddb7678dbd2c
- web https://github.openssl.org/openssl/extended-releases/commit/03b3941d60c4bce58fab69a0c22377ab439bc0e8
- web https://github.openssl.org/openssl/extended-releases/commit/aebaa5883e31122b404e450732dc833dc9dee539
- web https://www.openssl.org/news/secadv/20240125.txt
- web http://www.openwall.com/lists/oss-security/2024/03/11/1
- web https://lists.debian.org/debian-lts-announce/2024/10/msg00033.html
- web https://lists.debian.org/debian-lts-announce/2024/11/msg00000.html
- web af854a3a-2127-422b-91ae-364da2661108
- web https://cert-portal.siemens.com/productcert/html/ssa-265688.html
- web https://cert-portal.siemens.com/productcert/html/ssa-277137.html
- web https://cert-portal.siemens.com/productcert/html/ssa-331112.html
- web https://cert-portal.siemens.com/productcert/html/ssa-769027.html
- web https://cert-portal.siemens.com/productcert/html/ssa-915275.html
- web https://nvd.nist.gov/vuln/detail/CVE-2024-0727
- web https://github.com/github/advisory-database/pull/3472
- web https://github.com/openssl/openssl/pull/23362
- web https://github.com/alexcrichton/openssl-src-rs/commit/add20f73b6b42be7451af2e1044d4e0e778992b2
- web https://github.com/pyca/cryptography/commit/3519591d255d4506fbcd0d04037d45271903c64d
- web https://security.netapp.com/advisory/ntap-20240208-0006
- web https://github.com/advisories/GHSA-9v9h-cgj8-h64p