SB2021122127 - SUSE update for xorg-x11-server

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Main Vulnerability Database SB2021122127

SB2021122127 - SUSE update for xorg-x11-server

Published: December 21, 2021

Security Bulletin ID SB2021122127
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 write (CVE-ID: CVE-2021-4009)

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

The vulnerability exists due to a boundary error in the ProcXFixesCreatePointerBarrier() function in the XFixes extension. A local user can send a specially crafted CreatePointerBarrier request, trigger an out-of-bounds write and execute arbitrary code with elevated privileges.


2) Out-of-bounds write (CVE-ID: CVE-2021-4010)

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

The vulnerability exists due to a boundary error in the SProcScreenSaverSuspend() function in the Screen Saver extension. A local user can send a specially crafted Suspend request, trigger an out-of-bounds write and execute arbitrary code with elevated privileges.


3) Out-of-bounds write (CVE-ID: CVE-2021-4011)

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

The vulnerability exists due to a boundary error in the SwapCreateRegister() function in the Record extension. A local user can send a specially crafted RecordCreateContext and RecordRegisterClients requests, trigger an out-of-bounds write and execute arbitrary code with elevated privileges.


Remediation

Install update from vendor's website.

References