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UBUNTU-CVE-2023-45648
Vulnerability in tomcat6 (UBUNTU-CVE-2023-45648)
Summary
vulnerability in tomcat6 (UBUNTU-CVE-2023-45648). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to `8.5.39-1ubuntu1~18.04.3+esm5` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **UBUNTU-CVE-2023-45648** has been found in tomcat6.
Risk of unauthorized operations or information disclosure. CVSS score: ?/10.
What to do: upgrade tomcat6 to **8.5.39-1ubuntu1~18.04.3+esm5** or later.
If unsure, ask your IT team or search "tomcat6 UBUNTU-CVE-2023-45648" on the vendor's site.
UBUNTU-CVE-2023-45648 (tomcat6) —
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Patched: `8.5.39-1ubuntu1~18.04.3+esm5` — 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** (unclassified) exists in tomcat6.
📍 Affected scope
tomcat6 — .
🔥 Severity
Severity: ?. Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **8.5.39-1ubuntu1~18.04.3+esm5**.
🛡️ 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 'tomcat6' .` 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 'tomcat6' . | 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 `tomcat6` 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 tomcat6 to 8.5.39-1ubuntu1~18.04.3+esm5ステージング環境で 8.5.39-1ubuntu1~18.04.3+esm5 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
Ubuntu:Pro:14.04:LTS
tomcat6
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:Pro:14.04:LTS
tomcat7
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:Pro:16.04:LTS
tomcat8
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:16.04:LTS
tomcat6
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:Pro:16.04:LTS
tomcat7
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:Pro:18.04:LTS
tomcat7
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:Pro:18.04:LTS
tomcat8
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.5.39-1ubuntu1~18.04.3+esm5"}]}]
Ubuntu:Pro:18.04:LTS
tomcat9
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.0.16-3ubuntu0.18.04.2+esm4"}]}]
Ubuntu:20.04:LTS
tomcat9
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.0.31-1ubuntu0.8"}]}]
Ubuntu:Pro:22.04:LTS
tomcat9
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.0.58-1ubuntu0.1+esm4"}]}]
Ubuntu:Pro:24.04:LTS
tomcat9
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.0.70-2ubuntu0.1+esm2"}]}]
Ubuntu:25.10
tomcat11
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:25.10
tomcat9
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.0.70-2ubuntu3"}]}]
Ubuntu:26.04:LTS
tomcat11
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
References
- advisory https://ubuntu.com/security/notices/USN-7106-1
- advisory https://ubuntu.com/security/notices/USN-7562-1
- report https://ubuntu.com/security/CVE-2023-45648
- report https://www.openwall.com/lists/oss-security/2023/10/10/10
- report https://lists.apache.org/thread/2pv8yz1pyp088tsxfb7ogltk9msk0jdp
- report http://www.openwall.com/lists/oss-security/2023/10/10/10
- report https://www.cve.org/CVERecord?id=CVE-2023-45648