CVE-2022-45873
Severity
5.5MEDIUM
EPSS
0.0%
top 88.86%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedNov 23
Latest updateMar 7
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6
Affected Packages2 packages
Also affects: Fedora 36
Patches
🔴Vulnerability Details
3GHSA▶
GHSA-3w8w-mhj7-j5rc: systemd 250 and 251 allows local users to achieve a systemd-coredump deadlock by triggering a crash that has a long backtrace↗2022-11-24
CVEList▶
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↗2022-11-23
OSV▶
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↗2022-11-23
📋Vendor Advisories
4Microsoft▶
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 me↗2022-11-08
Debian▶
CVE-2022-45873: systemd - systemd 250 and 251 allows local users to achieve a systemd-coredump deadlock by...↗2022