#VU72887 Resource exhaustion in systemd - CVE-2022-45873

Vulnerability identifier: #VU72887

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-45873

CWE-ID: CWE-400

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
systemd
Server applications / Other server solutions

Vendor: Freedesktop.org

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a deadlock within the parse_elf_object() function in shared/elf-util.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

systemd: before 250.9

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External links
https://github.com/systemd/systemd/commit/076b807be472630692c5348c60d0c2b7b28ad437
https://github.com/systemd/systemd/pull/25055#issuecomment-1313733553
https://github.com/systemd/systemd/pull/24853#issuecomment-1326561497
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MS5N5SLYAHKENLAJWYBDKU55ICU3SVZF/

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?