VULNERABILITY INTELLIGENCE

CVE-2019-3842

CVSS score7 HIGH
EPSS probability1.21%
CISA KEVNot currently listed
Published2019-04-09
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Description

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".

Weakness classification

  • secalert@redhat.com: CWE-285
  • nvd@nist.gov: CWE-863

Primary references