CVE-2019-3842
- State
- Published
- Severity
- 4.5 Medium
- Published
- Apr 9, 2019
- Updated
- Jun 9, 2025
- Reserved
- Jan 3, 2019
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".
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.0 | 4.5 Medium | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L | redhat |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
systemdThe systemd Project |
|
References
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3842
- FEDORA-2019-3fa5db9e19vendor-advisory
- 46743exploit
- http://packetstormsecurity.com/files/152610/systemd-Seat-Verification-Active-Session-Spoofing.html
- [debian-lts-announce] 20190424 [SECURITY] [DLA 1762-1] systemd security updatemailing-list
- openSUSE-SU-2019:1450vendor-advisory
- [bookkeeper-issues] 20210628 [GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8mailing-list
- [bookkeeper-issues] 20210629 [GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8mailing-list
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