Homepage
About Snyk

CVE-2018-6954 Affecting systemd package, versions <229-4ubuntu21.15

medium

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.04% (6th percentile)
Expand this section
NVD
7.8 high
Expand this section
SUSE
7.1 high
Expand this section
Red Hat
7 high

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk ID SNYK-UBUNTU1604-SYSTEMD-305047
  • published 13 Feb 2018
  • disclosed 13 Feb 2018
Report a new vulnerability Found a mistake?

Introduced: 13 Feb 2018

CVE-2018-6954 Open this link in a new tab

How to fix?

Upgrade Ubuntu:16.04 systemd to version 229-4ubuntu21.15 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream systemd package and not the systemd package as distributed by Ubuntu. See How to fix? for Ubuntu:16.04 relevant fixed versions and status.

systemd-tmpfiles in systemd through 237 mishandles symlinks present in non-terminal path components, which allows local users to obtain ownership of arbitrary files via vectors involving creation of a directory and a file under that directory, and later replacing that directory with a symlink. This occurs even if the fs.protected_symlinks sysctl is turned on.

References