CVE-2024-39698— Code Signing Bypass on Windows in electron-updater < 6.3.0-alpha.6
Quick assessment
Affected
electron-userland electron-builder
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
electron-builder是一个用于打包和构建可供分发的Electron、Proton Native应用程序，适用于 macOS、Windows 和 Linux，并提供开箱即用的“自动更新”支持。 electron-builder 6.3.0-alpha.6之前版本存在安全漏洞，该漏洞源于可以绕过Windows上的代码签名，允许应用自动更新。
Possible ATT&CK Techniques 2 AI
T1059 · Command and Scripting Interpreter T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2024-39698
Vulnerability Information
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Vulnerability Title
Code Signing Bypass on Windows in electron-updater < 6.3.0-alpha.6
Source: CVE Program / CVE List V5
Vulnerability Description
electron-updater allows for automatic updates for Electron apps. The file `packages/electron-updater/src/windowsExecutableCodeSignatureVerifier.ts` implements the signature validation routine for Electron applications on Windows. Because of the surrounding shell, a first pass by `cmd.exe` expands any environment variable found in command-line above. This creates a situation where `verifySignature()` can be tricked into validating the certificate of a different file than the one that was just downloaded. If the step is successful, the malicious update will be executed even if its signature is invalid. This attack assumes a compromised update manifest (server compromise, Man-in-the-Middle attack if fetched over HTTP, Cross-Site Scripting to point the application to a malicious updater server, etc.). The patch is available starting from 6.3.0-alpha.6.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
变量名分隔符转义处理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
electron-builder 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
electron-builder是一个用于打包和构建可供分发的Electron、Proton Native应用程序，适用于 macOS、Windows 和 Linux，并提供开箱即用的“自动更新”支持。 electron-builder 6.3.0-alpha.6之前版本存在安全漏洞，该漏洞源于可以绕过Windows上的代码签名，允许应用自动更新。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| electron-userland | electron-builder | < 6.3.0-alpha.6 | - |
|
II. Public POCs for CVE-2024-39698
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Verified env
Premium
Qwen3.6-35B-A3B
· 10783 chars
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III. Intelligence Information for CVE-2024-39698
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Patches & Fixes for CVE-2024-39698 (2)
-
https://github.com/electron-userland/electron-builder/pull/8295 x_refsource_MISC
Vendor Advisories for CVE-2024-39698 (1)
Other References for CVE-2024-39698 (1)
IV. Related Vulnerabilities
V. Comments for CVE-2024-39698
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