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UBUNTU-CVE-2025-50059
Vulnerability in openjdk-9 (UBUNTU-CVE-2025-50059)
Summary
vulnerability in openjdk-9 (UBUNTU-CVE-2025-50059). Confidential information can be exposed externally. Mitigation: upgrade to `11.0.28+6-1ubuntu1~18.04.1` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **UBUNTU-CVE-2025-50059** has been found in openjdk-9.
Confidential information can be exposed externally. CVSS score: ?/10.
What to do: upgrade openjdk-9 to **11.0.28+6-1ubuntu1~18.04.1** or later.
If unsure, ask your IT team or search "openjdk-9 UBUNTU-CVE-2025-50059" on the vendor's site.
UBUNTU-CVE-2025-50059 (openjdk-9) —
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Patched: `11.0.28+6-1ubuntu1~18.04.1` — 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 openjdk-9.
📍 Affected scope
openjdk-9 — .
🔥 Severity
Severity: ?. Confidential information can be exposed externally
🔧 How to fix
Update to **11.0.28+6-1ubuntu1~18.04.1**.
🛡️ 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 'openjdk-9' .` 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 'openjdk-9' . | 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 `openjdk-9` 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 openjdk-9 to 11.0.28+6-1ubuntu1~18.04.1ステージング環境で 11.0.28+6-1ubuntu1~18.04.1 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。
-
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:16.04:LTS
openjdk-9
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:Pro:18.04:LTS
openjdk-lts
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"11.0.28+6-1ubuntu1~18.04.1"}]}]
Ubuntu:Pro:18.04:LTS
openjdk-17
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"17.0.16+8~us1-0ubuntu1~18.04.1"}]}]
Ubuntu:Pro:20.04:LTS
openjdk-lts
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"11.0.28+6-1ubuntu1~20.04.1"}]}]
Ubuntu:20.04:LTS
openjdk-13
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:20.04:LTS
openjdk-16
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:Pro:20.04:LTS
openjdk-17
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"17.0.16+8~us1-0ubuntu1~20.04.6"}]}]
Ubuntu:22.04:LTS
openjdk-17
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"17.0.16+8~us1-0ubuntu1~22.04.1"}]}]
Ubuntu:22.04:LTS
openjdk-18
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:22.04:LTS
openjdk-21
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"21.0.8+9~us1-0ubuntu1~22.04.1"}]}]
Ubuntu:22.04:LTS
openjdk-lts
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"11.0.28+6-1ubuntu1~22.04.1"}]}]
Ubuntu:24.04:LTS
openjdk-17
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"17.0.16+8~us1-0ubuntu1~24.04.1"}]}]
Ubuntu:24.04:LTS
openjdk-21
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"21.0.8+9~us1-0ubuntu1~24.04.1"}]}]
Ubuntu:24.04:LTS
openjdk-lts
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"11.0.28+6-1ubuntu1~24.04.1"}]}]
Ubuntu:25.10
openjdk-17
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"17.0.16+8-1"}]}]
Ubuntu:25.10
openjdk-17-crac
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"17.0.16+8-0ubuntu1"}]}]
Ubuntu:25.10
openjdk-21
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"21.0.8+9-1"}]}]
Ubuntu:25.10
openjdk-21-crac
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"21.0.8+9-0ubuntu1"}]}]
Ubuntu:25.10
openjdk-lts
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"11.0.28+6-1ubuntu1"}]}]
Ubuntu:26.04:LTS
openjdk-17-crac
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"17.0.16+8-0ubuntu1"}]}]
Ubuntu:26.04:LTS
openjdk-21-crac
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"21.0.8+9-0ubuntu1"}]}]
Ubuntu:26.04:LTS
openjdk-lts
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"11.0.28+6-1ubuntu1"}]}]
References
- advisory https://ubuntu.com/security/notices/USN-7669-1
- advisory https://ubuntu.com/security/notices/USN-7668-1
- advisory https://ubuntu.com/security/notices/USN-7672-1
- advisory https://ubuntu.com/security/notices/USN-7673-1
- advisory https://ubuntu.com/security/notices/USN-7674-1
- advisory https://ubuntu.com/security/notices/USN-7690-1
- report https://ubuntu.com/security/CVE-2025-50059
- report https://www.cve.org/CVERecord?id=CVE-2025-50059
- report https://www.oracle.com/security-alerts/cpujul2025.html