CVE Vulnerability

CVE-2022-45873

systemd 250 and 251 allows local users to achieve a systemd-coredump deadlock by triggering a crash that has a long backtrace. This occurs in parse_elf_object in shared/elf-util.c. The exploitation methodology is to crash a binary calling the same function recursively, and put it in a deeply nested directory to make its backtrace large enough to cause the deadlock. This must be done 16 times when MaxConnections=16 is set for the systemd/units/systemd-coredump.socket file.

5.5 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/systemd/systemd/commit/076b807be472630692c5348c60d0c2b7b28ad437 Patch Third Party Advisory
https://github.com/systemd/systemd/pull/25055#issuecomment-1313733553 Issue Tracking Patch
https://github.com/systemd/systemd/pull/24853#issuecomment-1326561497 Issue Tracking Patch
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MS5N5SLYAHKENLAJWYBDKU55ICU3SVZF/
Configurations

Configuration 1

cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:*
cpe:2.3:a:systemd_project:systemd:252:rc1:*:*:*:*:*:*
cpe:2.3:a:systemd_project:systemd:252:rc2:*:*:*:*:*:*
Information

Published : 2022-11-23 11:15

Updated : 2022-12-31 03:15

NVD link : CVE-2022-45873

Mitre link : CVE-2022-45873

Products Affected
No products.
CWE
CWE-400