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.

CVSS v3.0 5.5 MEDIUM

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 Third Party Advisory
https://github.com/systemd/systemd/pull/24853#issuecomment-1326561497	Issue Tracking Patch Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MS5N5SLYAHKENLAJWYBDKU55ICU3SVZF/	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

OR	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::::::

Configuration 2 (hide)

cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*

Information

Published : 2022-11-23 15:15

Updated : 2023-03-01 06:27

NVD link : CVE-2022-45873

Mitre link : CVE-2022-45873

JSON object : View

CWE

CWE-400

Uncontrolled Resource Consumption

Products Affected

systemd_project

systemd

fedoraproject

fedora

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