CVE-2018-16888
First published: Wed Jan 02 2019(Updated: )
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.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Systemd Project Systemd | <237 | |
| Canonical Ubuntu Linux | =16.04 | |
| Canonical Ubuntu Linux | =18.04 | |
| Canonical Ubuntu Linux | =19.10 | |
| Redhat Enterprise Linux | =7.0 | |
| Netapp Active Iq Performance Analytics Services | ||
| Netapp Element Software | ||
| redhat/systemd | <237 | 237 |
| debian/systemd | 247.3-7+deb11u5 247.3-7+deb11u6 252.31-1~deb12u1 257-2 |
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Reference Links
- https://access.redhat.com/errata/RHSA-2019:2091
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16888
- https://lists.apache.org/thread.html/5960a34a524848cd722fd7ab7e2227eac10107b0f90d9d1e9c3caa74@%3Cuser.cassandra.apache.org%3E
- https://security.netapp.com/advisory/ntap-20190307-0007/
- https://usn.ubuntu.com/4269-1/
- https://launchpad.net/bugs/cve/CVE-2018-16888
- https://github.com/systemd/systemd/pull/7816
- https://github.com/systemd/systemd/issues/6632
- https://access.redhat.com/security/cve/cve-2018-16888
- https://bugzilla.redhat.com/show_bug.cgi?id=1662867
- https://lists.apache.org/thread.html/5960a34a524848cd722fd7ab7e2227eac10107b0f90d9d1e9c3caa74%40%3Cuser.cassandra.apache.org%3E
- https://security-tracker.debian.org/tracker/CVE-2018-16888
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16888
- https://nvd.nist.gov/vuln/detail/CVE-2018-16888
- https://ubuntu.com/security/CVE-2018-16888
Frequently Asked Questions
What is the vulnerability ID for this issue?
The vulnerability ID for this issue is CVE-2018-16888.
What is the severity of CVE-2018-16888?
CVE-2018-16888 has a severity rating of 4.7, which is considered medium.
Which software vendors are affected by CVE-2018-16888?
CVE-2018-16888 affects Redhat, Canonical, and Netapp.
How can I fix CVE-2018-16888?
To fix CVE-2018-16888, you should update your systemd package to version 237 or higher.
Where can I find more information about CVE-2018-16888?
You can find more information about CVE-2018-16888 on the MITRE, Ubuntu, and NIST websites.
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