Improper Authorization Affecting systemd package, versions <237-3ubuntu10.19


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
1.21% (66th percentile)

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 IDSNYK-UBUNTU1804-SYSTEMD-342620
  • published9 Apr 2019
  • disclosed9 Apr 2019

Introduced: 9 Apr 2019

CVE-2019-3842  (opens in a new tab)
CWE-285  (opens in a new tab)

How to fix?

Upgrade Ubuntu:18.04 systemd to version 237-3ubuntu10.19 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:18.04 relevant fixed versions and status.

In systemd before v242-rc4, it was discovered that pam_systemd does not properly sanitize the environment before using the XDG_SEAT variable. It is possible for an attacker, in some particular configurations, to set a XDG_SEAT environment variable which allows for commands to be checked against polkit policies using the "allow_active" element rather than "allow_any".

CVSS Base Scores

version 3.1