Public Date:
1639076: CVE-2018-15687 systemd: Dereference of symlinks in chown_recursive.c:chown_one() allows for modification of file privileges

The MITRE CVE dictionary describes this issue as:

A race condition in chown_one() of systemd allows an attacker to cause systemd to set arbitrary permissions on arbitrary files. Affected releases are systemd versions up to and including 239.

Find out more about CVE-2018-15687 from the MITRE CVE dictionary dictionary and NIST NVD.


This issue did not affect the versions of systemd as shipped with Red Hat Enterprise Linux 7 as the vulnerable code was introduced in a newer version of the package.

CVSS v3 metrics

NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.

CVSS3 Base Score 6.3
CVSS3 Base Metrics CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Attack Vector Local
Attack Complexity High
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity Impact High
Availability Impact None

Affected Packages State

Platform Package State
Red Hat Virtualization 4 systemd Not affected
Red Hat Enterprise Linux 7 systemd Not affected


Red Hat would like to thank Ubuntu and Jann Horn (Google Project Zero) for reporting this issue.
Last Modified

CVE description copyright © 2017, The MITRE Corporation