Homepage
About Snyk

Improper Authorization Affecting systemd package, versions <204-5ubuntu20.31

Severity

 Recommended
medium

Based on Ubuntu security rating

    Threat Intelligence

    EPSS
    0.22% (60th 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 ID SNYK-UBUNTU1404-SYSTEMD-342837
  • published 9 Apr 2019
  • disclosed 9 Apr 2019
Report a new vulnerability Found a mistake?

Introduced: 9 Apr 2019

CVE-2019-3842 Open this link in a new tab
CWE-285 Open this link in a new tab

How to fix?

Upgrade Ubuntu:14.04 systemd to version 204-5ubuntu20.31 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:14.04 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".

References

CVSS Scores

version 3.1
Expand this section

NVD

7 high
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    High
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High