SB2020090883 - Ubuntu update for libx11

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Main Vulnerability Database SB2020090883

SB2020090883 - Ubuntu update for libx11

Published: September 8, 2020 Updated: April 23, 2025

Security Bulletin ID SB2020090883
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) Integer overflow (CVE-ID: CVE-2020-14344)

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

The vulnerability exists due to integer overflow in the X Input Method (XIM) client in libX11. A local user can run a specially crafted program, trigger integer overflow and execute arbitrary code on the system with elevated privileges.


2) Double Free (CVE-ID: CVE-2020-14363)

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

The vulnerability exists due to a boundary error when handling locales in LibX11. A local user can run a specially crafted program to trigger integer overflow and double free and execute arbitrary code on the system with elevated privileges.


Remediation

Install update from vendor's website.

References