CVE-2018-16888
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.
Does this matter?
Lower severity and a low EPSS score (0.29%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 4.7 MEDIUMCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.29% probability · 22th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-250, CWE-269
- Affected
- systemd project/systemd · canonical/ubuntu linux · redhat/enterprise linux · netapp/active iq performance analytics services · netapp/element software
- Source
- secalert@redhat.com
References
- https://access.redhat.com/errata/RHSA-2019:2091Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16888Issue Tracking, Patch, Third Party Advisory
- https://lists.apache.org/thread.html/5960a34a524848cd722fd7ab7e2227eac10107b0f90d9d1e9c3caa74%40%3Cuser.cassandra.apache.org%3E
- https://security.netapp.com/advisory/ntap-20190307-0007/Third Party Advisory
- https://usn.ubuntu.com/4269-1/Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2091Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16888Issue Tracking, Patch, Third Party Advisory
- https://lists.apache.org/thread.html/5960a34a524848cd722fd7ab7e2227eac10107b0f90d9d1e9c3caa74%40%3Cuser.cassandra.apache.org%3E
- https://security.netapp.com/advisory/ntap-20190307-0007/Third Party Advisory
- https://usn.ubuntu.com/4269-1/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.