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CVE-2020-35459
Privilege Escalation in crmsh (CVE-2020-35459)
Summary
vulnerability in crmsh (CVE-2020-35459). Successful exploitation can lead to full system takeover.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2020-35459** has been found in crmsh.
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 "crmsh CVE-2020-35459" on the vendor's site.
CVE-2020-35459 (crmsh) — CWE-269 /
Attack vector: local / no user interaction
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-269) exists in crmsh.
📍 Affected scope
crmsh — .
🔥 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. Run `grep -r 'crmsh' .` 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
-
1Identify exposure identify
grep -r 'crmsh' . | 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 `crmsh` 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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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
crmsh
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"4.2.1"}]}]
References
- advisory https://nvd.nist.gov/vuln/detail/CVE-2020-35459
- advisory https://github.com/ClusterLabs/crmsh/releases
- advisory https://lists.debian.org/debian-lts-announce/2021/01/msg00021.html
- advisory https://github.com/advisories/GHSA-99xx-83jm-h24m
- package https://github.com/ClusterLabs/crmsh
- package https://pypi.org/project/crmsh
- patch https://github.com/ClusterLabs/crmsh/blob/a403aa15f3ea575adfe5e43bf2a31c9f9094fcda/crmsh/history.py#L476
- patch http://www.openwall.com/lists/oss-security/2021/01/12/3
- report https://bugzilla.suse.com/show_bug.cgi?id=1179999
- report https://www.openwall.com/lists/oss-security/2021/01/12/3