synced JUST NOW
01 Record

CVE-2019-3842

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

MediumPUBLISHEDCNA: redhat
CNA base score4.5 CVSS v3.xCVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

02 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

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
1.20% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 67.7% of scored records. A rank, not a probability.
NVD base score
7.0 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2019-04-09 20:25Z7 YR AGO
Last updated
2025-06-09 15:47Z1 YR AGO
Reserved
2019-01-03
Assigning CNA
redhat
Record state
PUBLISHED
Severity
Medium (CVSS 4.5)
CNA CVSS vector
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
Weaknesses
Data version
5.1
Document digest
522c0e3efe99dad0315c270644aa1ddc9461666dccb67dbdb05673fdbed7756b

05 Affected products

VendorProductVersionsPlatforms
The systemd Projectsystemdv242-rc4—

06 References

07 Fixed in

Debian 12

  • systemd
    Fixed in 241-3

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • systemd
    Fixed in 241-3

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • systemd
    Fixed in 241-3

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 14.04 LTS

  • systemd
    Fixed in 204-5ubuntu20.31

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • systemd
    Fixed in 229-4ubuntu21.21

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

  • systemd
    Fixed in 237-3ubuntu10.19

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.