Vulnerability identifier: #VU72246

Vulnerability risk: Low

CVSSv3.1: 2.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-22490

CWE-ID: CWE-59

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Git
Client/Desktop applications / Software for system administration

Vendor: Git

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to insecure processing of symbolic links when using local clone optimization. Git will abort local clones whose source `$GIT_DIR/objects` directory contains symbolic links, however the `objects` directory itself may still be a symbolic link. A remote attacker can trick the victim into using the local clone optimization to exfiltrate arbitrary files from the victim's system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Git: 2.38.0 - 2.39.1, 2.37.0 - 2.37.5, 2.36.0 - 2.36.4, 2.35.0 - 2.35.6, 2.34.0 - 2.34.6, 2.33.0 - 2.33.6, 2.32.0 - 2.32.5, 2.31.0 - 2.31.6, 2.30.0 - 2.30.7

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External links
http://github.com/git/git/commit/c867e4fa180bec4750e9b54eb10f459030dbebfd
http://github.com/git/git/security/advisories/GHSA-gw92-x3fm-3g3q

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.