CVE-2022-41953

Published: 17 January 2023

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.

Notes

Author	Note
rodrigo-zaiden	affects git GUI for Windows.

Priority

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package	Release	Status
git Launchpad, Ubuntu, Debian	bionic	Not vulnerable (Windows only)
	focal	Not vulnerable (Windows only)
	jammy	Not vulnerable (Windows only)
	kinetic	Not vulnerable (Windows only)
	trusty	Ignored (end of standard support)
	upstream	Needs triage
	xenial	Not vulnerable (Windows only)

Severity score breakdown

Parameter	Value
Base score	7.8
Attack vector	Local
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

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