Unrated severityNVD Advisory· Published Apr 9, 2019· Updated Jun 9, 2025
CVE-2019-3842
CVE-2019-3842
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".
Affected products
23- osv-coords22 versionspkg:apk/chainguard/py3.10-systemdpkg:apk/chainguard/py3.11-systemdpkg:apk/chainguard/py3.12-systemdpkg:apk/chainguard/py3.13-systemdpkg:apk/chainguard/py3-supported-systemdpkg:apk/chainguard/py3-systemdpkg:rpm/opensuse/systemd&distro=openSUSE%20Tumbleweedpkg:rpm/suse/systemd&distro=SUSE%20Enterprise%20Storage%204pkg:rpm/suse/systemd&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP3pkg:rpm/suse/systemd&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP4pkg:rpm/suse/systemd&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015pkg:rpm/suse/systemd&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP1pkg:rpm/suse/systemd&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/systemd&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSSpkg:rpm/suse/systemd&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3pkg:rpm/suse/systemd&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4pkg:rpm/suse/systemd&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2pkg:rpm/suse/systemd&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/systemd&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/systemd&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP3pkg:rpm/suse/systemd&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP4pkg:rpm/suse/systemd&distro=SUSE%20OpenStack%20Cloud%207
< 0+ 21 more
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 249.4-2.2
- (no CPE)range: < 228-150.66.4
- (no CPE)range: < 228-150.66.4
- (no CPE)range: < 228-150.66.4
- (no CPE)range: < 234-24.30.1
- (no CPE)range: < 234-24.30.1
- (no CPE)range: < 228-150.66.4
- (no CPE)range: < 228-150.66.4
- (no CPE)range: < 228-150.66.4
- (no CPE)range: < 228-150.66.4
- (no CPE)range: < 228-150.66.4
- (no CPE)range: < 228-150.66.4
- (no CPE)range: < 228-150.66.4
- (no CPE)range: < 228-150.66.4
- (no CPE)range: < 228-150.66.4
- (no CPE)range: < 228-150.66.4
- The systemd Project/systemdv5Range: v242-rc4
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
8- www.exploit-db.com/exploits/46743/mitreexploitx_refsource_EXPLOIT-DB
- lists.opensuse.org/opensuse-security-announce/2019-05/msg00062.htmlmitrevendor-advisoryx_refsource_SUSE
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/STR36RJE4ZZIORMDXRERVBHMPRNRTHAC/mitrevendor-advisoryx_refsource_FEDORA
- packetstormsecurity.com/files/152610/systemd-Seat-Verification-Active-Session-Spoofing.htmlmitrex_refsource_MISC
- bugzilla.redhat.com/show_bug.cgimitrex_refsource_CONFIRM
- lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3Emitremailing-listx_refsource_MLIST
- lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3Emitremailing-listx_refsource_MLIST
- lists.debian.org/debian-lts-announce/2019/04/msg00022.htmlmitremailing-listx_refsource_MLIST
News mentions
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