SB2020021327 - OpenSUSE Linux update for systemd

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Main Vulnerability Database SB2020021327

SB2020021327 - OpenSUSE Linux update for systemd

Published: February 13, 2020

Security Bulletin ID SB2020021327
Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Memory leak (CVE-ID: CVE-2019-20386)

The vulnerability allows a local user to perform DoS attack on the target system.

The vulnerability exists due memory leak in button_open() function in login/logind-button.c in systemd. A remote attacker can execute the udevadm trigger command and perform denial of service attack.


2) Use-after-free (CVE-ID: CVE-2020-1712)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error when processing dbus messages during asynchronous Polkit queries in bus-polkit.c in systemd. A local unprivileged user can send a specially crafted dbus message, trigger a use-after-free error and crash services or execute arbitrary code on the system with elevated privileges.


Remediation

Install update from vendor's website.

References