CVE-2019-3842

High

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".

SeverityHigh
CVSS7.0
Exploit probability—
ProductSystemd
PublishedApr 9, 2019
First seenApr 9, 2019
Weakness typeCWE-285CWE-285

How to fix

Affected products

ProductAffected versionsFixed in
systemd_project systemdv ≤ 241, 242—
redhat enterprise_linux7.0—
fedoraproject fedora30—
debian debian_linux8.0—

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CVE-2019-3842 · Systemd · Dark Radar