[KEV] Vulnérabilité dans com.thoughtworks.xstream:xstream (CVE-2021-39144)
Résumé
vulnérabilité dans com.thoughtworks.xstream:xstream (CVE-2021-39144). L'exploitation peut entraîner la prise de contrôle totale du système. Inscrit au CISA KEV — exploitation active confirmée. Atténuation : mise à jour vers `1.4.18` ou plus.
Résumé IA snake-internal / snake-material-v2
Actions de réponse (7 étapes)
Étapes concrètes et exemples de commandes que les équipes SOC/SRE doivent exécuter dans l'ordre
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1Identify exposure identify
grep -r 'com.thoughtworks.xstream:xstream' . | 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 `com.thoughtworks.xstream:xstream` 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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4Consider incident declaration escalate
Notify SOC / on-callCISA KEV登録済 = 実環境で悪用が観測されている。Step 3 で兆候があればインシデント対応宣言、無くてもパッチ適用までWAF強化を最優先で。
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5Apply temporary workaround mitigate
See [workarounds](https://x-stream.github.io/security.html#workaround) for the different versions covering all CVEs.パッチが適用されるまでの応急処置として、See [workarounds](https://x-stream.github.io/security.html#workaround) for the different versions covering all CVEs. を実施。回避策の副作用 (機能低下) を確認した上で。
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6Apply patch patch
Upgrade com.thoughtworks.xstream:xstream to 1.4.18ステージング環境で 1.4.18 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。
Paquets affectés
Références
- advisory https://nvd.nist.gov/vuln/detail/CVE-2021-39144
- advisory https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/22KVR6B5IZP3BGQ3HPWIO2FWWCKT3DHP/
- advisory https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PVPHZA7VW2RRSDCOIPP2W6O5ND254TU7/
- advisory https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QGXIU3YDPG6OGTDHMBLAFN7BPBERXREB/
- advisory https://security.netapp.com/advisory/ntap-20210923-0003/
- package https://github.com/x-stream/xstream
- web https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-39144
- web https://github.com/x-stream/xstream/security/advisories/GHSA-j9h8-phrw-h4fh
- web https://lists.debian.org/debian-lts-announce/2021/09/msg00017.html
- web https://www.debian.org/security/2021/dsa-5004
- web https://www.oracle.com/security-alerts/cpuapr2022.html
- web https://www.oracle.com/security-alerts/cpujan2022.html
- web https://www.oracle.com/security-alerts/cpujul2022.html
- web http://packetstormsecurity.com/files/169859/VMware-NSX-Manager-XStream-Unauthenticated-Remote-Code-Execution.html
- web https://x-stream.github.io/CVE-2021-39144.html
- web https://security.netapp.com/advisory/ntap-20210923-0003
- web https://lists.fedoraproject.org/archives/list/[email protected]/message/QGXIU3YDPG6OGTDHMBLAFN7BPBERXREB
- web https://lists.fedoraproject.org/archives/list/[email protected]/message/PVPHZA7VW2RRSDCOIPP2W6O5ND254TU7
- web https://lists.fedoraproject.org/archives/list/[email protected]/message/22KVR6B5IZP3BGQ3HPWIO2FWWCKT3DHP
- web https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QGXIU3YDPG6OGTDHMBLAFN7BPBERXREB
- web https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PVPHZA7VW2RRSDCOIPP2W6O5ND254TU7
- web https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/22KVR6B5IZP3BGQ3HPWIO2FWWCKT3DHP