Use After Free Affecting systemd-pam package, versions <0:239-18.el8_1.4


0.0
high

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.05% (21st percentile)
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NVD
7.8 high
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SUSE
7.8 high
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Red Hat
7.8 high

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  • Snyk ID SNYK-CENTOS8-SYSTEMDPAM-2023413
  • published 26 Jul 2021
  • disclosed 5 Feb 2020

How to fix?

Upgrade Centos:8 systemd-pam to version 0:239-18.el8_1.4 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream systemd-pam package and not the systemd-pam package as distributed by Centos. See How to fix? for Centos:8 relevant fixed versions and status.

A heap use-after-free vulnerability was found in systemd before version v245-rc1, where asynchronous Polkit queries are performed while handling dbus messages. A local unprivileged attacker can abuse this flaw to crash systemd services or potentially execute code and elevate their privileges, by sending specially crafted dbus messages.