#VU71235 Infinite loop in libXpm - CVE-2022-44617

Vulnerability identifier: #VU71235

Vulnerability risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-44617

CWE-ID: CWE-835

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
libXpm
Other software / Other software solutions

Vendor: xorg.freedesktop.org

Description

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

The vulnerability exists due to infinite loop within the ParsePixels() function when handling XPM files with width set to 0 and a very large height value. A remote attacker can trick the victim to open a specially crafted XPM file and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

libXpm: 3.5.4.2 - 3.5.14

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External links
https://lists.x.org/archives/xorg-announce/2023-January/003312.html
https://gitlab.freedesktop.org/xorg/lib/libxpm/-/commit/f80fa6ae47ad4a5beacb28
https://gitlab.freedesktop.org/xorg/lib/libxpm/-/commit/c5ab17bcc34914c0b0707d

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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.