CVE-2022-41953

 

Published at: - 17-01-2023 11:15

Last modified: - 25-01-2023 03:13

Total changes: - 2

Description

Git GUI is a convenient graphical tool that comes with Git for Windows. Its target audience is users who are uncomfortable with using Git on the command-line. Git GUI has a function to clone repositories. Immediately after the local clone is available, Git GUI will automatically post-process it, among other things running a spell checker called `aspell.exe` if it was found. Git GUI is implemented as a Tcl/Tk script. Due to the unfortunate design of Tcl on Windows, the search path when looking for an executable _always includes the current directory_. Therefore, malicious repositories can ship with an `aspell.exe` in their top-level directory which is executed by Git GUI without giving the user a chance to inspect it first, i.e. running untrusted code. This issue has been addressed in version 2.39.1. Users are advised to upgrade. Users unable to upgrade should avoid using Git GUI for cloning. If that is not a viable option, at least avoid cloning from untrusted sources.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

 

Verification logic

 

Reference

• https://github.com/git-for-windows/git/pull/4219
• https://www.tcl.tk/man/tcl8.6/TclCmd/exec.html#M23
• https://github.com/git-for-windows/git/security/advisories/GHSA-v4px-mx59-w99c
• https://github.com/git-for-windows/git/commit/7360767e8dfc1895a932324079f7d45d7791d39f

 

Keywords

NVD

 

CVE-2022-41953

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures