Vulnerability in schneider-electric (CVE-2020-7564, CVSS 8.8)

Summary

vulnerability in schneider-electric (CVE-2020-7564). Successful exploitation can lead to full system takeover.

Original description

The description as published by the source.

A CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability exists in the Web Server on Modicon M340, Modicon Quantum and Modicon Premium Legacy offers and their Communication Modules (see notification for details) which could cause write access and the execution of commands when uploading a specially crafted file on the controller over FTP.

Source: NIST National Vulnerability Database NVD GitHub Advisory

AI summary

Written by an external AI model and may contain mistakes. Check the original description and references below before acting on it.

A vulnerability tracked as CVE-2020-7564 has been found in schneider-electric.
Successful exploitation can lead to full system takeover. CVSS score: 8.8/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "schneider-electric CVE-2020-7564" on the vendor's site.

CVE-2020-7564 (schneider-electric) — CWE-120 / CVSS v3 8.8
Attack vector: remote (network-reachable) / no user interaction
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

バッファオーバーフローの脆弱性

📍 Affected scope

Modicon M340、Quantum、Premium LegacyのWebサーバー

🔥 Severity

特別に作成されたファイルで攻撃者がFTP経由でコマンドを実行可能であり、システムへの不正アクセスに繋がる可能性がある。

🔧 How to fix

提供されたパッチを適用すること。

🛡️ Workaround

情報なし

🔍 Detection

特定の攻撃が発生した場合のログや異常なアクティビティを監視する。

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

1
Identify exposure identify
```
grep -r 'schneider-electric' . | 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 schneider-electric を grep し、稼働しているサービス・バージョンを把握する。
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。

References

patch se.com
web nvd.nist.gov
web se.com
web github.com