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.

Severity

 

CVSS Version 3.x CVSS Version 2.0

CVSS 3.x Severity and Metrics:

NIST: NVD

Base Score:  7.8 HIGH

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

CNA:  GitHub, Inc.

Base Score:  8.6 HIGH

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

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: It is possible that the NVD CVSS may not match that of the CNA. The most common reason for this is that publicly available information does not provide sufficient detail or that information simply was not available at the time the CVSS vector string was assigned.

CVSS 2.0 Severity and Metrics:

NIST: NVD

Base Score: N/A

NVD score not yet provided.

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have not published a CVSS score for this CVE at this time. NVD Analysts use publicly available information at the time of analysis to associate CVSS vector strings.

References to Advisories, Solutions, and Tools

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

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-426	Untrusted Search Path	GitHub, Inc.

Known Affected Software Configurations Switch to CPE 2.2

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Change History

1 change records found show changes

Initial Analysis by NIST 1/25/2023 9:13:03 AM

Action	Type	Old Value	New Value
Added	CPE Configuration		AND OR *cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:* versions up to (excluding) 2.39.1 OR cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
Added	CVSS V3.1		NIST AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Changed	Reference Type	https://github.com/git-for-windows/git/commit/7360767e8dfc1895a932324079f7d45d7791d39f No Types Assigned	https://github.com/git-for-windows/git/commit/7360767e8dfc1895a932324079f7d45d7791d39f Patch, Third Party Advisory
Changed	Reference Type	https://github.com/git-for-windows/git/pull/4219 No Types Assigned	https://github.com/git-for-windows/git/pull/4219 Patch, Third Party Advisory
Changed	Reference Type	https://github.com/git-for-windows/git/security/advisories/GHSA-v4px-mx59-w99c No Types Assigned	https://github.com/git-for-windows/git/security/advisories/GHSA-v4px-mx59-w99c Patch, Third Party Advisory
Changed	Reference Type	https://www.tcl.tk/man/tcl8.6/TclCmd/exec.html#M23 No Types Assigned	https://www.tcl.tk/man/tcl8.6/TclCmd/exec.html#M23 Third Party Advisory