CVE-2023-22743

low-risk
Published 2023-02-14

Git for Windows is the Windows port of the revision control system Git. Prior to Git for Windows version 2.39.2, by carefully crafting DLL and putting into a subdirectory of a specific name living next to the Git for Windows installer, Windows can be tricked into side-loading said DLL. This potentially allows users with local write access to place malicious payloads in a location where automated upgrades might run the Git for Windows installer with elevation. Version 2.39.2 contains a patch for this issue. Some workarounds are available. Never leave untrusted files in the Downloads folder or its sub-folders before executing the Git for Windows installer, or move the installer into a different directory before executing it.

Do I need to act?

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0.10% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.2/10 High
LOCAL / HIGH complexity

Affected Products (1)

Git For Windows

Affected Vendors

Git For Windows Project

References (12)

Technical Description https://attack.mitre.org/techniques/T1574/002/
Release Notes https://github.com/git-for-windows/git/releases/tag/v2.39.2.windows.1
Vendor Advisory https://github.com/git-for-windows/git/security/advisories/GHSA-gf48-x3vr-j5c3
Vendor Advisory https://github.com/git-for-windows/git/security/advisories/GHSA-p2x9-prp4-8gvq
Patch https://learn.microsoft.com/en-us/windows/win32/controls/cookbook-overview?redir...
Patch https://learn.microsoft.com/en-us/windows/win32/sbscs/about-side-by-side-assembl...
Technical Description https://attack.mitre.org/techniques/T1574/002/
Release Notes https://github.com/git-for-windows/git/releases/tag/v2.39.2.windows.1
Vendor Advisory https://github.com/git-for-windows/git/security/advisories/GHSA-gf48-x3vr-j5c3
Vendor Advisory https://github.com/git-for-windows/git/security/advisories/GHSA-p2x9-prp4-8gvq
Patch https://learn.microsoft.com/en-us/windows/win32/controls/cookbook-overview?redir...
Patch https://learn.microsoft.com/en-us/windows/win32/sbscs/about-side-by-side-assembl...
24
/ 100
low-risk
Severity 19/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal