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CVE-2019-3842

Public on 2019-04-09
Modified on 2022-10-03
Description

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".

Severity
Medium
See what this means
CVSS v3 Base Score
4.5
See breakdown

Affected Packages

Platform Package Release Date Advisory
Amazon Linux 2 - Core systemd 2022-09-30 07:04 ALAS2-2022-1854

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 4.5 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
NVD CVSSv2 4.4 AV:L/AC:M/Au:N/C:P/I:P/A:P
NVD CVSSv3 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Red Hat: CVE-2019-3842 Mitre: CVE-2019-3842 FAQs regarding Amazon Linux ALAS/CVE Severity