SB2020082901 - OpenSUSE Linux update for xorg-x11-server

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Main Vulnerability Database SB2020082901

SB2020082901 - OpenSUSE Linux update for xorg-x11-server

Published: August 29, 2020

Security Bulletin ID SB2020082901
Severity
Low
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 secuirty vulnerabilities.


1) Out-of-bounds read (CVE-ID: CVE-2020-14345)

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in XkbSetNames(). A local user can run a specially crafted program to trigger out-of-bounds read error and read contents of memory on the system.


2) Integer underflow (CVE-ID: CVE-2020-14346)

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

The vulnerability exists due to integer underflow in the XIChangeHierarchy(). A local user can send a specially crafted request to the affected application, trigger integer underflow and execute arbitrary code on the target system with elevated privileges.


3) Improper Initialization (CVE-ID: CVE-2020-14347)

The vulnerability allows a local authenticated user to gain access to sensitive information.

A flaw was found in the way xserver memory was not properly initialized. This could leak parts of server memory to the X client. In cases where Xorg server runs with elevated privileges, this could result in possible ASLR bypass. Xorg-server before version 1.20.9 is vulnerable.


Remediation

Install update from vendor's website.

References