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CVE-2019-11340
Vulnerability in matrix-sydent (CVE-2019-11340)
Summary
vulnerability in matrix-sydent (CVE-2019-11340). Data can be tampered with by attackers. Mitigation: upgrade to `1.0.2` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2019-11340** has been found in matrix-sydent.
Data can be tampered with by attackers. CVSS score: ?/10.
What to do: upgrade matrix-sydent to **1.0.2** or later.
If unsure, ask your IT team or search "matrix-sydent CVE-2019-11340" on the vendor's site.
CVE-2019-11340 (matrix-sydent) — CWE-20 /
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Patched: `1.0.2` — 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** (CWE-20) exists in matrix-sydent.
📍 Affected scope
matrix-sydent — .
🔥 Severity
Severity: ?. Data can be tampered with by attackers
🔧 How to fix
Update to **1.0.2**.
🛡️ 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 'matrix-sydent' .` 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 'matrix-sydent' . | 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 `matrix-sydent` 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 matrix-sydent to 1.0.2ステージング環境で 1.0.2 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
PyPI
matrix-sydent
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.2"}]}]
References
- advisory https://nvd.nist.gov/vuln/detail/CVE-2019-11340
- advisory https://twitter.com/matrixdotorg/status/1118934335963500545
- advisory https://github.com/advisories/GHSA-q9h8-gpw5-c95c
- advisory https://matrix.org/blog/2019/04/18/security-update-sydent-1-0-2/
- package https://pypi.org/project/matrix-sydent
- patch https://github.com/matrix-org/sydent/commit/4e1cfff53429c49c87d5c457a18ed435520044fc
- patch https://github.com/matrix-org/sydent/compare/7c002cd...09278fb
- web https://matrix.org/blog/2019/04/18/security-update-sydent-1-0-2