CVE-2023-22743
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.35%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.3 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 0.35% probability · 29th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-426
- Affected
- git for windows project/git for windows
- Source
- security-advisories@github.com
References
- https://attack.mitre.org/techniques/T1574/002/Technical Description
- https://github.com/git-for-windows/git/releases/tag/v2.39.2.windows.1Release Notes
- https://github.com/git-for-windows/git/security/advisories/GHSA-gf48-x3vr-j5c3Vendor Advisory
- https://github.com/git-for-windows/git/security/advisories/GHSA-p2x9-prp4-8gvqVendor Advisory
- https://learn.microsoft.com/en-us/windows/win32/controls/cookbook-overview?redirectedfrom=MSDN#using-comctl32dll-version-6-in-an-application-that-uses-only-standard-extensionsPatch, Technical Description, Vendor Advisory
- https://learn.microsoft.com/en-us/windows/win32/sbscs/about-side-by-side-assemblies-Patch, Technical Description, Vendor Advisory
- https://attack.mitre.org/techniques/T1574/002/Technical Description
- https://github.com/git-for-windows/git/releases/tag/v2.39.2.windows.1Release Notes
- https://github.com/git-for-windows/git/security/advisories/GHSA-gf48-x3vr-j5c3Vendor Advisory
- https://github.com/git-for-windows/git/security/advisories/GHSA-p2x9-prp4-8gvqVendor Advisory
- https://learn.microsoft.com/en-us/windows/win32/controls/cookbook-overview?redirectedfrom=MSDN#using-comctl32dll-version-6-in-an-application-that-uses-only-standard-extensionsPatch, Technical Description, Vendor Advisory
- https://learn.microsoft.com/en-us/windows/win32/sbscs/about-side-by-side-assemblies-Patch, Technical Description, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.