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LSN-0100-1

Vulnérabilité dans linux-lts-xenial (LSN-0100-1)

Résumé

vulnérabilité dans linux-lts-xenial (LSN-0100-1). Risque d'opérations non autorisées ou de divulgation. Atténuation : mise à jour vers `4.4.0-250.284~14.04.1` ou plus.

Résumé IA snake-internal / snake-material-v2

Une vulnérabilité référencée **LSN-0100-1** a été découverte dans linux-lts-xenial. Risque d'opérations non autorisées ou de divulgation. Score CVSS : ?/10. Action : mettez à jour linux-lts-xenial vers **4.4.0-250.284~14.04.1** ou supérieur. En cas de doute, contactez votre service informatique ou cherchez « linux-lts-xenial LSN-0100-1 » sur le site de l'éditeur.

LSN-0100-1 (linux-lts-xenial) — Correctif : `4.4.0-250.284~14.04.1` — appliquer immédiatement Plan : 1) Audit SBOM, 2) Mise à jour staging→prod, 3) Surveillance WAF/proxy sur les endpoints affectés, 4) Recherche d'IOC dans les logs. Réfs : voir GHSA / avis éditeur / version corrigée liés sur cette page.

❓ Quel est le problème

Une **vulnérabilité** (non classée) affecte linux-lts-xenial.

📍 Périmètre concerné

linux-lts-xenial — .

🔥 Gravité

Gravité : ?. Risque d'opérations non autorisées ou de divulgation

🔧 Comment corriger

Mettre à jour vers **4.4.0-250.284~14.04.1**.

🛡️ Contournement

En attendant le correctif : désactivez la fonctionnalité concernée, appliquez des règles WAF, ou restreignez l'accès par ACL réseau.

🔍 Détection

Recherchez dans les logs des requêtes correspondant aux IOC connus de cette CVE. Auditez les SBOM/dépendances.

Actions de réponse (7 étapes)

Étapes concrètes et exemples de commandes que les équipes SOC/SRE doivent exécuter dans l'ordre

1
Identify exposure identify
```
grep -r 'linux-lts-xenial' . | 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 `linux-lts-xenial` を grep し、稼働しているサービス・バージョンを把握する。
6
Apply patch patch
```
Upgrade linux-lts-xenial to 4.4.0-250.284~14.04.1
```
ステージング環境で 4.4.0-250.284~14.04.1 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。
7
Post-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

Ubuntu:Pro:14.04:LTS linux-lts-xenial

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.0-250.284~14.04.1"}]}]

Ubuntu:Pro:16.04:LTS linux-aws

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.0-1165.180"}]}]

Ubuntu:Pro:16.04:LTS linux-azure

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.15.0-1173.188~16.04.1"}]}]

Ubuntu:Pro:16.04:LTS linux-aws-hwe

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.15.0-1164.177~16.04.1"}]}]

Ubuntu:Pro:16.04:LTS linux-hwe

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.15.0-221.232~16.04.1"}]}]

Ubuntu:Pro:16.04:LTS linux

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.0-250.284"}]}]

Ubuntu:Pro:16.04:LTS linux-gcp

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.15.0-1158.175~16.04.1"}]}]

Ubuntu:Pro:18.04:LTS linux-aws

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.15.0-1164.177"}]}]

Ubuntu:Pro:18.04:LTS linux-aws-5.4

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.4.0-1117.127~18.04.1"}]}]

Ubuntu:Pro:18.04:LTS linux-azure-4.15

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.15.0-1173.188"}]}]

Ubuntu:Pro:18.04:LTS linux-azure-5.4

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.4.0-1122.129~18.04.1"}]}]

Ubuntu:Pro:18.04:LTS linux

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.15.0-221.232"}]}]

Ubuntu:Pro:18.04:LTS linux-gcp-4.15

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.15.0-1158.175"}]}]

Ubuntu:Pro:18.04:LTS linux-gcp-5.4

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.4.0-1121.130~18.04.1"}]}]

Ubuntu:Pro:18.04:LTS linux-hwe-5.4

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.4.0-170.188~18.04.1"}]}]

Ubuntu:Pro:20.04:LTS linux-aws

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.4.0-1117.127"}]}]

Ubuntu:Pro:20.04:LTS linux-aws-5.15

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.0-1053.58~20.04.1"}]}]

Ubuntu:Pro:20.04:LTS linux-azure

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.4.0-1122.129"}]}]

Ubuntu:Pro:20.04:LTS linux

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.4.0-170.188"}]}]

Ubuntu:Pro:20.04:LTS linux-gcp-5.15

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.0-1051.59~20.04.1"}]}]

Ubuntu:Pro:20.04:LTS linux-gcp

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.4.0-1121.130"}]}]

Ubuntu:Pro:20.04:LTS linux-gke

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Ubuntu:Pro:20.04:LTS linux-gke-5.15

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Ubuntu:Pro:20.04:LTS linux-gkeop

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.4.0-1084.88"}]}]

Ubuntu:Pro:20.04:LTS linux-ibm

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.4.0-1064.69"}]}]

Ubuntu:Pro:20.04:LTS linux-ibm-5.15

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.0-1046.49~20.04.1"}]}]

Ubuntu:Pro:20.04:LTS linux-hwe-5.15

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.0-94.104~20.04.1"}]}]

Ubuntu:Pro:20.04:LTS linux-lowlatency-hwe-5.15

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.0-94.104~20.04.1"}]}]

Ubuntu:Pro:22.04:LTS linux-aws

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.0-1053.58"}]}]

Ubuntu:Pro:22.04:LTS linux-aws-6.2

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.2.0-1018.18~22.04.1"}]}]

Ubuntu:Pro:22.04:LTS linux-azure

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.0-1056.64"}]}]

Ubuntu:Pro:22.04:LTS linux-azure-6.2

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.2.0-1019.19~22.04.1"}]}]

Ubuntu:Pro:22.04:LTS linux-gcp

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.0-1051.59"}]}]

Ubuntu:Pro:22.04:LTS linux-gcp-6.2

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.2.0-1021.23~22.04.1"}]}]

Ubuntu:Pro:22.04:LTS linux-gke

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.0-1050.55"}]}]

Ubuntu:Pro:22.04:LTS linux-hwe-6.2

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.2.0-37.38~22.04.1"}]}]

Ubuntu:Pro:22.04:LTS linux-ibm

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.0-1046.49"}]}]

Ubuntu:Pro:22.04:LTS linux

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.0-94.104"}]}]

Références

advisory https://ubuntu.com/security/notices/LSN-0100-1
report https://ubuntu.com/security/CVE-2023-5345
report https://ubuntu.com/security/CVE-2023-6040
report https://ubuntu.com/security/CVE-2023-6176
report https://ubuntu.com/security/CVE-2023-6817
report https://ubuntu.com/security/CVE-2023-6932