CVE-2022-41953

Git clone remote code execution vulnerability in git-for-windows

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.

Category

8.6
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.86% Top 30%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory tcl.tk
Affected: git-for-windows git
Published at:
Updated at:

References

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

Frequently Asked Questions

What is the severity of CVE-2022-41953?
CVE-2022-41953 has been scored as a high severity vulnerability.
How to fix CVE-2022-41953?
To fix CVE-2022-41953, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-41953 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-41953 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-41953?
CVE-2022-41953 affects git-for-windows git.
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