GHSA-3w8w-mhj7-j5rcMediumCVSS 5.5
systemd 250 and 251 allows local users to achieve a systemd-coredump deadlock by triggering a...
🔗 CVE IDs covered (1)
📋 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.
🔗 References (8)
- https://nvd.nist.gov/vuln/detail/CVE-2022-45873
- https://github.com/systemd/systemd/pull/25055#issuecomment-1313733553
- https://github.com/systemd/systemd/commit/076b807be472630692c5348c60d0c2b7b28ad437
- https://github.com/systemd/systemd/pull/24853#issuecomment-1326561497
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MS5N5SLYAHKENLAJWYBDKU55ICU3SVZF
- https://lists.fedoraproject.org/archives/list/[email protected]/message/MS5N5SLYAHKENLAJWYBDKU55ICU3SVZF
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
- https://github.com/advisories/GHSA-3w8w-mhj7-j5rc