Vulnerability Details : CVE-2018-16888
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.
Products affected by CVE-2018-16888
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
- cpe:2.3:a:netapp:active_iq_performance_analytics_services:-:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:element_software:-:*:*:*:*:*:*:*
- cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-16888
0.09%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 22 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-16888
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
1.9
|
LOW | AV:L/AC:M/Au:N/C:N/I:N/A:P |
3.4
|
2.9
|
NIST | |
|
4.4
|
MEDIUM | CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H |
0.8
|
3.6
|
Red Hat, Inc. | |
|
4.7
|
MEDIUM | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.0
|
3.6
|
NIST |
CWE ids for CVE-2018-16888
-
The product performs an operation at a privilege level that is higher than the minimum level required, which creates new weaknesses or amplifies the consequences of other weaknesses.Assigned by: secalert@redhat.com (Secondary)
-
The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-16888
-
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16888
1662867 – (CVE-2018-16888) CVE-2018-16888 systemd: kills privileged process if unprivileged PIDFile was tamperedIssue Tracking;Patch;Third Party Advisory
-
https://lists.apache.org/thread.html/5960a34a524848cd722fd7ab7e2227eac10107b0f90d9d1e9c3caa74@%3Cuser.cassandra.apache.org%3E
cassandra does not start with new systemd version - Pony MailThird Party Advisory
-
https://access.redhat.com/errata/RHSA-2019:2091
RHSA-2019:2091 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://usn.ubuntu.com/4269-1/
USN-4269-1: systemd vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://security.netapp.com/advisory/ntap-20190307-0007/
CVE-2018-16888 Systemd Vulnerability in NetApp Products | NetApp Product SecurityThird Party Advisory
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