Multiple vulnerabilities in libgit2



Published: 2024-02-07
Risk High
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2024-24575
CVE-2024-24577
CWE-ID CWE-835
CWE-122
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		libgit2
Universal components / Libraries / Libraries used by multiple products

Vendor libgit2.github.com

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Infinite loop

EUVDB-ID: #VU86202

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-24575

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Exploit availability: No

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 - 1.7.1

External links

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

2) Heap-based buffer overflow

EUVDB-ID: #VU86201

Risk: High

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-24577

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

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 - 1.7.1

External links

http://github.com/libgit2/libgit2/security/advisories/GHSA-j2v7-4f6v-gpg8
http://github.com/libgit2/libgit2/releases/tag/v1.6.5
http://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.



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