Vulnerability in ansible (CVE-2018-16837)

Summary

vulnerability in ansible (CVE-2018-16837). Successful exploitation can lead to full system takeover. Mitigation: upgrade to `2.7.1, 2.6.7, 2.5.11` or later.

AI summary snake-internal / snake-material-v2

A vulnerability tracked as **CVE-2018-16837** has been found in ansible. Successful exploitation can lead to full system takeover. CVSS score: ?/10. What to do: upgrade ansible to **2.7.1, 2.6.7, 2.5.11** or later. If unsure, ask your IT team or search "ansible CVE-2018-16837" on the vendor's site.

CVE-2018-16837 (ansible) — Attack vector: local / no user interaction Patched: `2.7.1, 2.6.7, 2.5.11` — 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 ansible.

📍 Affected scope

ansible — .

🔥 Severity

Severity: ?. Successful exploitation can lead to full system takeover

🔧 How to fix

Update to **2.7.1, 2.6.7, 2.5.11**.

🛡️ 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 'ansible' .` 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

1
Identify exposure identify
```
grep -r 'ansible' . | 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 `ansible` 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 ansible to 2.7.1, 2.6.7, 2.5.11
```
ステージング環境で 2.7.1, 2.6.7, 2.5.11 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。

Affected packages

PyPI ansible

[{"type":"ECOSYSTEM","events":[{"introduced":"2.7"},{"fixed":"2.7.1"},{"introduced":"2.6"},{"fixed":"2.6.7"},{"introduced":"0"},{"fixed":"2.5.11"}]}]