Resource Exhaustion Affecting systemd package, versions <252-1
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Test your applications- Snyk ID SNYK-DEBIAN12-SYSTEMD-3147091
- published 24 Nov 2022
- disclosed 23 Nov 2022
Introduced: 23 Nov 2022
CVE-2022-45873 Open this link in a new tabHow to fix?
Upgrade Debian:12 systemd to version 252-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream systemd package and not the systemd package as distributed by Debian.
See How to fix? for Debian:12 relevant fixed versions and status.
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.
References
- https://security-tracker.debian.org/tracker/CVE-2022-45873
- 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/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MS5N5SLYAHKENLAJWYBDKU55ICU3SVZF/