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Resource Exhaustion Affecting systemd package, versions <252-1

0.0
medium

Snyk CVSS

    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 0.04% (6th percentile)
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NVD
5.5 medium
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Red Hat
5.5 medium

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  • Snyk ID SNYK-DEBIANUNSTABLE-SYSTEMD-3147092
  • published 24 Nov 2022
  • disclosed 23 Nov 2022
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Introduced: 23 Nov 2022

CVE-2022-45873 Open this link in a new tab
CWE-400 Open this link in a new tab

How to fix?

Upgrade Debian:unstable 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:unstable 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.