Use After Free Affecting libgudev1 package, versions <0:219-57.amzn2.0.12


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.46% (38th percentile)

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  • Snyk IDSNYK-AMZN2-LIBGUDEV1-1677899
  • published27 Sept 2021
  • disclosed31 Mar 2020

Introduced: 31 Mar 2020

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

How to fix?

Upgrade Amazon-Linux:2 libgudev1 to version 0:219-57.amzn2.0.12 or higher.
This issue was patched in ALAS2-2020-1388.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libgudev1 package and not the libgudev1 package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 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 Base Scores

version 3.1