Denial of service in systemd

1) Resource exhaustion

EUVDB-ID: #VU72887

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-45873

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

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 251.9

External links

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

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.