SB2023050331 - Gentoo update for systemd

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Main Vulnerability Database SB2023050331

SB2023050331 - Gentoo update for systemd

Published: May 3, 2023

Security Bulletin ID SB2023050331
Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Uncontrolled recursion (CVE-ID: CVE-2021-3997)

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to uncontrolled recursion in systemd-tmpfiles. A local user can create multiple nested directories in the /tmp folder and case systemd to crash during the system boot.


2) Off-by-one (CVE-ID: CVE-2022-3821)

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to an off-by-one error within the format_timespan() function in time-util.c. A local user can trigger an off-by-one error and perform a denial of service (DoS) attack.



Remediation

Install update from vendor's website.

References