CVE - CVE-2023-25815

CVE-ID
CVE-2023-25815	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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:\`.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
FEDORA:FEDORA-2023-003e7d2867 URL:https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RKOXOAZ42HLXHXTW6JZI4L5DAIYDTYCU/ FEDORA:FEDORA-2023-d84a75ea52 URL:https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YFZWGQKB6MM5MNF2DLFTD7KS2KWPICKL/ FEDORA:FEDORA-2023-eaf1bdd5ae URL:https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PI7FZ4NNR5S5J5K6AMVQBH2JFP6NE4L7/ GENTOO:GLSA-202312-15 URL:https://security.gentoo.org/glsa/202312-15 MISC:https://axcheron.github.io/exploit-101-format-strings/#writing-to-the-stack URL:https://axcheron.github.io/exploit-101-format-strings/#writing-to-the-stack MISC:https://github.com/git-for-windows/git/releases/tag/v2.40.1.windows.1 URL:https://github.com/git-for-windows/git/releases/tag/v2.40.1.windows.1 MISC:https://github.com/git-for-windows/git/security/advisories/GHSA-9w66-8mq8-5vm8 URL:https://github.com/git-for-windows/git/security/advisories/GHSA-9w66-8mq8-5vm8 MISC:https://github.com/msys2/MINGW-packages/pull/10461 URL:https://github.com/msys2/MINGW-packages/pull/10461 MISC:https://pubs.opengroup.org/onlinepubs/9699919799/functions/printf.html URL:https://pubs.opengroup.org/onlinepubs/9699919799/functions/printf.html MLIST:[oss-security] 20230425 [ANNOUNCE] Git v2.40.1 and friends URL:http://www.openwall.com/lists/oss-security/2023/04/25/2
Assigning CNA
GitHub (maintainer security advisories)
Date Record Created
20230215	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20230215)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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