SB2023053015 - Gentoo update for X.Org X server, XWayland
Published: May 30, 2023
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 15 secuirty vulnerabilities.
1) Out-of-bounds write (CVE-ID: CVE-2021-4008)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error in the SProcRenderCompositeGlyphs() function in the Render extension. A local user can send a specially crafted CompositeGlyphs request, trigger an out-of-bounds write and execute arbitrary code with elevated privileges.
2) 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.
3) 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.
4) 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.
5) 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.
6) 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.
7) Memory leak (CVE-ID: CVE-2022-3553)
The vulnerability allows a local user to perform DoS attack on the target system.
The vulnerability exists due memory leak within the xquartz component in hw/xquartz/X11Controller.m. A local user can force the application to leak memory and perform denial of service attack.
8) Use-after-free (CVE-ID: CVE-2022-4283)
The vulnerability allows a local user to escalate privileges on the system.
9) 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.
10) 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.
11) 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.
12) 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.
13) 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.
14) 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.
15) Use-after-free (CVE-ID: CVE-2023-1393)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error when processing deletion of a compositor overlay window. A local user can trigger a use-after-free error and execute arbitrary code on the system.
Remediation
Install update from vendor's website.