#VU86202 Infinite loop in libgit2 - CVE-2024-24575

Vulnerability identifier: #VU86202

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-24575

CWE-ID: CWE-835

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
libgit2
Universal components / Libraries / Libraries used by multiple products

Vendor: libgit2.github.com

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to infinite loop in git_revparse_single within the revparse() function in src/libgit2/revparse.c. A remote attacker can consume all available system resources and cause denial of service conditions.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

libgit2: 1.0.0 - 1.0.1, 1.1.0 - 1.1.1, 1.2.0, 1.3.0 - 1.3.2, 1.4.0 - 1.4.6, 1.5.0, 1.5.1, 1.5.2, 1.6.0 - 1.6.4, 1.7.0 - 1.7.1

---

External links
https://github.com/libgit2/libgit2/security/advisories/GHSA-54mf-x2rh-hq9v
https://github.com/libgit2/libgit2/commit/add2dabb3c16aa49b33904dcdc07cd915efc12fa
https://github.com/libgit2/libgit2/releases/tag/v1.6.5
https://github.com/libgit2/libgit2/releases/tag/v1.7.2

---

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.