Description
It was discovered systemd does not correctly check the content of PIDFile files before using it to kill processes. When a service is run from an unprivileged user (e.g. User field set in the service file), a local attacker who is able to write to the PIDFile of the mentioned service may use this flaw to trick systemd into killing other services and/or privileged processes. Versions before v237 are vulnerable.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
The systemd Project systemd
v237affected
References
- https://security.netapp.com/advisory/ntap-20190307-0007/ ↗
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16888 ↗
- https://access.redhat.com/errata/RHSA-2019:2091 ↗
- https://lists.apache.org/thread.html/5960a34a524848cd722fd7ab7e2227eac10107b0f90d9d1e9c3caa74%40%3Cuser.cassandra.apache.org%3E ↗
- https://usn.ubuntu.com/4269-1/ ↗