SB2023051699 - Red Hat Enterprise Linux 8 update for xorg-x11-server

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Main Vulnerability Database SB2023051699

SB2023051699 - Red Hat Enterprise Linux 8 update for xorg-x11-server

Published: May 16, 2023

Security Bulletin ID SB2023051699
Severity
Low
Patch available
YES
Number of vulnerabilities 9
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 9 secuirty vulnerabilities.


1) Buffer overflow (CVE-ID: CVE-2022-3550)

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

The vulnerability exists due to a boundary error within the _GetCountedString() function in xkb/xkb.c. A local user can trigger memory corruption and execute arbitrary code with elevated privileges.


2) Memory leak (CVE-ID: CVE-2022-3551)

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

The vulnerability exists due memory leak within the ProcXkbGetKbdByName() function in xkb/xkb.c. A local user can force the application to leak memory and perform denial of service attack.


3) Use-after-free (CVE-ID: CVE-2022-4283)

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

The vulnerability exists due to a use-after-free error when handling XkbCopyNames requests. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

4) Stack-based buffer overflow (CVE-ID: CVE-2022-46340)

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

The vulnerability exists due to a boundary error  within the swap handler for the XTestFakeInput request of the XTest extension if GenericEvents with lengths larger than 32 bytes are sent through a the XTestFakeInput request. A local user can trigger a stack-based buffer overflow and execute arbitrary code with elevated privileges.



5) Out-of-bounds read (CVE-ID: CVE-2022-46341)

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

The vulnerability exists due to a boundary condition when handling XIPassiveUngrab requests. A local user can trigger an out-of-bounds read error and read contents of memory on the system.


6) Use-after-free (CVE-ID: CVE-2022-46342)

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

The vulnerability exists due to a use-after-free error when handling XvdiSelectVideoNotify requests. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.



7) Use-after-free (CVE-ID: CVE-2022-46343)

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

The vulnerability exists due to a use-after-free error when handling ScreenSaverSetAttributes requests. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.




8) Out-of-bounds read (CVE-ID: CVE-2022-46344)

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

The vulnerability exists due to a boundary condition when handling XIChangeProperty requests. A local user can trigger an out-of-bounds read error and read contents of memory on the system.


9) Use-after-free (CVE-ID: CVE-2023-0494)

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

The vulnerability exists due to a use-after-free error within DeepCopyPointerClasses. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.


Remediation

Install update from vendor's website.

References