#VU86201 Heap-based buffer overflow in libgit2 - CVE-2024-24577

Vulnerability identifier: #VU86201

Vulnerability risk: High

CVSSv4.0: 7.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2024-24577

CWE-ID: CWE-122

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 execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in git_index_add. A remote attacker can pass specially crafted filename that starts with a "/" character to the application, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

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

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External links
https://github.com/libgit2/libgit2/security/advisories/GHSA-j2v7-4f6v-gpg8
https://github.com/libgit2/libgit2/releases/tag/v1.6.5
https://github.com/libgit2/libgit2/releases/tag/v1.7.2

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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.