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CVE-2023-43655
Vulnerability in CVE-2023-43655 (CVE-2023-43655)
Summary
vulnerability in CVE-2023-43655 (CVE-2023-43655). Successful exploitation can lead to full system takeover. Exploitable via ``register_argc_argv``.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2023-43655** has been found in CVE-2023-43655.
Attackers can target a specific entry point like ``register_argc_argv`` over the network to misuse the product.
Successful exploitation can lead to full system takeover. CVSS score: ?/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "CVE-2023-43655 CVE-2023-43655" on the vendor's site.
CVE-2023-43655 (CVE-2023-43655) — CWE-74 /
Attack vector: remote (network-reachable)
Attack surface: `register_argc_argv`
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-74) exists in CVE-2023-43655. Attackers reach the vulnerable code path via ``register_argc_argv`` without authentication.
📍 Affected scope
CVE-2023-43655 — . Attack surface: `register_argc_argv`.
🔥 Severity
Severity: ?. Successful exploitation can lead to full system takeover
🔧 How to fix
Update to the patched release per vendor advisory.
🛡️ 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. Audit SBOM/dependencies to find affected services.
Response Actions (7 steps)
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
Audit SBOM/dependencies for affected components.依存マニフェストで影響コンポーネントを特定する。
-
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。
References
- advisory https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/43xxx/CVE-2023-43655.json
- advisory https://github.com/composer/composer/security/advisories/GHSA-jm6m-4632-36hf
- advisory https://nvd.nist.gov/vuln/detail/CVE-2023-43655
- patch https://github.com/composer/composer/commit/4fce14795aba98e40b6c4f5047305aba17a6120d
- patch https://github.com/composer/composer/commit/955a48e6319c8962e5cd421b07c00ab3c728968c
- patch https://github.com/composer/composer/commit/95e091c921037b7b6564942845e7b738f6b95c9c
- web https://lists.debian.org/debian-lts-announce/2024/03/msg00030.html
- web https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/66H2WKFUO255T3BZTL72TNYJYH2XM5FG/
- web https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7AWYAUZNH565NWPIKGEIYBWHYNM5JGAE/
- web https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KFOPGPW2KS37O3KJWBRGTUWHTXCQXBS2/