CVE-2019-3842
systemd - security update
7.0
HIGH
CVSS 3.1
EPSS 0.10%
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".
How to fix CVE-2019-3842
To remediate CVE-2019-3842, upgrade the affected package to a fixed version below.
- —upgrade to 241-3 or later
- —upgrade to 232-25+deb9u11 or later
Is CVE-2019-3842 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 241-3
- from 0, < 232-25+deb9u11
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.0 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |