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.
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History
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2024-08-02T04:26:15.985Z
Reserved: 2024-06-27T18:44:13.037Z
Link: CVE-2024-39698
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Updated: 2024-08-02T04:26:15.985Z
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Status : Modified
Published: 2024-07-09T18:15:10.863
Modified: 2024-11-21T09:28:14.690
Link: CVE-2024-39698
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