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


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.05% (25th percentile)

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  • Snyk IDSNYK-RHEL8-SYSTEMD-3666651
  • published26 Jul 2021
  • disclosed5 Feb 2020

Introduced: 5 Feb 2020

CVE-2020-1712  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade RHEL:8 systemd to version 0:239-18.el8_1.4 or higher.
This issue was patched in RHSA-2020:0575.

NVD Description

Note: Versions mentioned in the description apply only to the upstream systemd package and not the systemd package as distributed by RHEL. See How to fix? for RHEL: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.

CVSS Scores

version 3.1