Is CVE-2019-3842 actively exploited?

CVE-2019-3842 has no public evidence of in-the-wild exploitation as of 2024-11-21.

What is the CVSS score for CVE-2019-3842?

CVE-2019-3842 has a CVSS score of 7 (HIGH severity). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2019-3842?

Patch guidance is available from systemd project security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2019-3842.

Fix CVE-2019-3842 - HIGH systemd project systemd

Q: Which products are affected by CVE-2019-3842?

7 products: systemd project systemd, systemd project systemd, systemd project systemd, systemd project systemd, redhat enterprise linux, and 2 more.

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".

CVSS Metrics

Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector: local
Complexity: high
Privileges: low
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-285 CWE-863 · Incorrect Authorization

Metadata

Primary Vendor: SYSTEMD_PROJECT
Published: 4/9/2019
Last Modified: 11/21/2024
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

systemd_project : systemdsystemd_project : systemdsystemd_project : systemdsystemd_project : systemdredhat : enterprise_linuxfedoraproject : fedoradebian : debian_linux

Remediation Guidance

Executive Summary

Cite this page

CVE-2019-3842. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2019-3842

View on NIST NVD

CVE-2019-3842 vulnerability