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systemd: Spoofing of XDG_SEAT allows for actions to be checked against "allow_active" instead of "allow_any"

🗓️ 18 May 2021 15:28:44Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 5 Views

XDG_SEAT spoofing in systemd can switch policy checks to allow_active due to pam_systemd not sanitizing the environment.

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10 Oct 202200:00
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Tenable Nessus		Alibaba Cloud Linux 3 : 0039: systemd (ALINUX3-SA-2022:0039)
14 May 202500:00
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Tenable Nessus		AlmaLinux 8 : systemd (ALSA-2021:1611)
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Tenable Nessus		CentOS 8 : systemd (CESA-2021:1611)
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Tenable Nessus		Debian DSA-4428-1 : systemd - security update
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Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8aarch64systemd239-45.el8systemd-239-45.el8.aarch64.rpm
Red Hat Enterprise Linux8i686systemd239-45.el8systemd-239-45.el8.i686.rpm
Red Hat Enterprise Linux8ppc64lesystemd239-45.el8systemd-239-45.el8.ppc64le.rpm
Red Hat Enterprise Linux8s390xsystemd239-45.el8systemd-239-45.el8.s390x.rpm
Red Hat Enterprise Linux8x86_64systemd239-45.el8systemd-239-45.el8.x86_64.rpm
Red Hat Enterprise Linux8aarch64systemd-container239-45.el8systemd-container-239-45.el8.aarch64.rpm
Red Hat Enterprise Linux8i686systemd-container239-45.el8systemd-container-239-45.el8.i686.rpm
Red Hat Enterprise Linux8ppc64lesystemd-container239-45.el8systemd-container-239-45.el8.ppc64le.rpm
Red Hat Enterprise Linux8s390xsystemd-container239-45.el8systemd-container-239-45.el8.s390x.rpm
Red Hat Enterprise Linux8x86_64systemd-container239-45.el8systemd-container-239-45.el8.x86_64.rpm
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21 Nov 2025 18:22Current
7.2High risk
Vulners AI Score7.2
CVSS 24.4
CVSS 3.17
CVSS 34.5
EPSS0.01217
SSVC
CWE-863
systemd spoofingxdg seatpam systemdpolkit policiesenvironment sanitization
5