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USN-8503-1
Vulnerability in ncurses (USN-8503-1)
Summary
vulnerability in ncurses (USN-8503-1). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to `5.9+20140118-1ubuntu1+esm6` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **USN-8503-1** has been found in ncurses.
Risk of unauthorized operations or information disclosure. CVSS score: ?/10.
What to do: upgrade ncurses to **5.9+20140118-1ubuntu1+esm6** or later.
If unsure, ask your IT team or search "ncurses USN-8503-1" on the vendor's site.
USN-8503-1 (ncurses) —
Patched: `5.9+20140118-1ubuntu1+esm6` — 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 ncurses.
📍 Affected scope
ncurses — .
🔥 Severity
Severity: ?. Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **5.9+20140118-1ubuntu1+esm6**.
🛡️ 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 'ncurses' .` 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
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1Identify exposure identify
grep -r 'ncurses' . | 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 `ncurses` 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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6Apply patch patch
Upgrade ncurses to 5.9+20140118-1ubuntu1+esm6ステージング環境で 5.9+20140118-1ubuntu1+esm6 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。
Affected packages
Ubuntu:Pro:14.04:LTS
ncurses
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.9+20140118-1ubuntu1+esm6"}]}]
Ubuntu:Pro:16.04:LTS
ncurses
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0+20160213-1ubuntu1+esm6"}]}]
Ubuntu:Pro:18.04:LTS
ncurses
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1-1ubuntu1.18.04.1+esm3"}]}]
Ubuntu:Pro:20.04:LTS
ncurses
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.2-0ubuntu2.1+esm1"}]}]