In Git for Windows, the Windows port of Git, no localized messages are shipped with the installer. As a consequence, Git is expected not to localize messages at all, and skips the gettext initialization. However, due to a change in MINGW-packages, the `gettext()` function's implicit initialization no longer uses the runtime prefix but uses the hard-coded path `C:\mingw64\share\locale` to look for localized messages. And since any authenticated user has the permission to create folders in `C:\` (and since `C:\mingw64` does not typically exist), it is possible for low-privilege users to place fake messages in that location where `git.exe` will pick them up in version 2.40.1. This vulnerability is relatively hard to exploit and requires social engineering. For example, a legitimate message at the end of a clone could be maliciously modified to ask the user to direct their web browser to a malicious website, and the user might think that the message comes from Git and is legitimate. It does require local write access by the attacker, though, which makes this attack vector less likely. Version 2.40.1 contains a patch for this issue. Some workarounds are available. Do not work on a Windows machine with shared accounts, or alternatively create a `C:\mingw64` folder and leave it empty. Users who have administrative rights may remove the permission to create folders in `C:\`.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2023-04-25T19:51:38.433Z

Updated: 2024-08-02T11:32:12.304Z

Reserved: 2023-02-15T16:34:48.773Z

Link: CVE-2023-25815

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2023-04-25T20:15:09.997

Modified: 2024-06-26T10:15:11.530

Link: CVE-2023-25815

cve-icon Redhat

Severity : Low

Publid Date: 2023-04-25T00:00:00Z

Links: CVE-2023-25815 - Bugzilla