The systemd Project systemd
At a glance
- Source
- NVD
- EPSS
- EPSS 1.21 % · percentile 68 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- redhat
- NVD status
- Modified
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".
Weaknesses (CWE)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3842
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/STR36RJE4ZZIORMDXRERVBHMPRNRTHAC/
- https://www.exploit-db.com/exploits/46743/
- http://packetstormsecurity.com/files/152610/systemd-Seat-Verification-Active-Session-Spoofing.html
- https://lists.debian.org/debian-lts-announce/2019/04/msg00022.html
- http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00062.html
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.0 | MEDIUM 4.5 | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L | redhat |
| CVSS 3.1 | HIGH 7.0 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 3.0 | MEDIUM 4.5 | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L | NVD · secalert@redhat.com (Secondary) |
| CVSS 2.0 | MEDIUM 4.4 | AV:L/AC:M/Au:N/C:P/I:P/A:P | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2019-13462
- GCVE · GCVE-0-2019-3842
CERT-FR advisories
- CERTFR-2026-AVI-0281 — Multiples vulnérabilités dans les produits Splunk · cert.ssi.gouv.fr
- CERTFR-2021-AVI-791 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:*≤ 241cpe:2.3:a:systemd_project:systemd:242:rc1:*:*:*:*:*:*cpe:2.3:a:systemd_project:systemd:242:rc2:*:*:*:*:*:*cpe:2.3:a:systemd_project:systemd:242:rc3:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| The systemd Project · systemd | affected v242-rc4 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |