CVE-2024-39698

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.

Reserved 2024-06-27 | Published 2024-07-09 | Updated 2024-08-02 | Assigner GitHub_M

Problem types

CWE-154: Improper Neutralization of Variable Name Delimiters

Product status

< 6.3.0-alpha.6
affected

References

github.com/...uilder/security/advisories/GHSA-9jxc-qjr9-vjxq

github.com/electron-userland/electron-builder/pull/8295

github.com/...ommit/ac2e6a25aa491c1ef5167a552c19fc2085cd427f

github.com/.../src/windowsExecutableCodeSignatureVerifier.ts

cve.org (CVE-2024-39698)

nvd.nist.gov (CVE-2024-39698)

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