Network Infrastructure
CVE-2020-7562 high CVSS 8.1

Out-of-Bounds Read in schneider-electric (CVE-2020-7562)

Summary

vulnerability in schneider-electric (CVE-2020-7562). Confidential information can be exposed externally.

Original description

The description as published by the source.

A CWE-125: Out-of-Bounds Read 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 a segmentation fault or a buffer overflow 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-2020-7562 has been found in schneider-electric.
Confidential information can be exposed externally. CVSS score: 8.1/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "schneider-electric CVE-2020-7562" on the vendor's site.

CVE-2020-7562 (schneider-electric) — CWE-125 / CVSS v3 8.1
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

Modicon M340、Quantum、Premiumのレガシー製品群のWebサーバーにおけるアウトオブバウンズ読み取りの脆弱性。

📍 Affected scope

Modicon M340、Quantum、Premiumのレガシー製品およびその通信モジュールのWebサーバー。

🔥 Severity

特別に細工されたファイルをFTP経由でアップロードすると、セグメンテーションフォールトやバッファオーバーフローを引き起こす可能性があるため、高度な脅威。

🔧 How to fix

提供されたパッチを適用する。詳細は参照URLを確認。

🛡️ Workaround

情報なし

🔍 Detection

パッチを適用し、Webサーバーの完全性を確認する。

Response actions

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

  1. 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。

  2. 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

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