Vulnerability 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 Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Systemd Project | Systemd | < 237 |
| Canonical | Ubuntu Linux | 16.04 |
| Redhat | Enterprise Linux | 7.0 |
| Netapp | Active Iq Performance Analytics Services | - |
| Netapp | Element Software | - |
Related Weaknesses (CWE)
References
- https://access.redhat.com/errata/RHSA-2019:2091Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16888Issue TrackingPatchThird Party Advisory
- https://lists.apache.org/thread.html/5960a34a524848cd722fd7ab7e2227eac10107b0f90
- 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 TrackingPatchThird Party Advisory
- https://lists.apache.org/thread.html/5960a34a524848cd722fd7ab7e2227eac10107b0f90
- https://security.netapp.com/advisory/ntap-20190307-0007/Third Party Advisory
- https://usn.ubuntu.com/4269-1/Third Party Advisory
FAQ
What is CVE-2018-16888?
CVE-2018-16888 is a vulnerability with a CVSS score of 4.7 (MEDIUM). 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 f...
How severe is CVE-2018-16888?
CVE-2018-16888 has been rated MEDIUM with a CVSS base score of 4.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-16888?
Check the references section above for vendor advisories and patch information. Affected products include: Systemd Project Systemd, Canonical Ubuntu Linux, Redhat Enterprise Linux, Netapp Active Iq Performance Analytics Services, Netapp Element Software.