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CVE-2022-45873

MEDIUM

5.5

Description

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.

CVE Details

CVSS v3.1 Score5.5

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack VectorLOCAL

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published11/23/2022

Last Modified4/25/2025

Sourcenvd

Honeypot Sightings0

Affected Products

fedoraproject:fedorasystemd_project:systemd

Weaknesses (CWE)

CWE-400CWE-400

References

https://github.com/systemd/systemd/commit/076b807be472630692c5348c60d0c2b7b28ad437(cve@mitre.org)

https://github.com/systemd/systemd/pull/24853#issuecomment-1326561497(cve@mitre.org)

https://github.com/systemd/systemd/pull/25055#issuecomment-1313733553(cve@mitre.org)

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MS5N5SLYAHKENLAJWYBDKU55ICU3SVZF/(cve@mitre.org)

https://github.com/systemd/systemd/commit/076b807be472630692c5348c60d0c2b7b28ad437(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/systemd/systemd/pull/24853#issuecomment-1326561497(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/systemd/systemd/pull/25055#issuecomment-1313733553(af854a3a-2127-422b-91ae-364da2661108)

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MS5N5SLYAHKENLAJWYBDKU55ICU3SVZF/(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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