SB2024040412 - Multiple vulnerabilities in X.Org X server and Xwayland
Published: April 4, 2024 Updated: April 29, 2024
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 secuirty vulnerabilities.
1) Heap-based buffer overflow (CVE-ID: CVE-2024-31080)
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to a boundary error within the ProcXIGetSelectedEvents() function. A local user can trigger a heap-based buffer overflow and read system memory.
2) Heap-based buffer overflow (CVE-ID: CVE-2024-31081)
The vulnerability allows a local user to gain access to sensitive information.
3) Heap-based buffer overflow (CVE-ID: CVE-2024-31082)
The vulnerability allows a local user to gain access to sensitive information.
Note, the vulnerability affects only Xquartz server for MacOS systems.
4) Use-after-free (CVE-ID: CVE-2024-31083)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the ProcRenderAddGlyphs() function. 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
- https://lists.x.org/archives/xorg-announce/2024-April/003497.html
- https://gitlab.freedesktop.org/xorg/xserver/-/commit/96798fc1967491c80a4d0
- https://gitlab.freedesktop.org/xorg/xserver/-/commit/3e77295f888c67fc7645d
- https://gitlab.freedesktop.org/xorg/xserver/-/commit/6c684d035c06fd41c727f
- https://gitlab.freedesktop.org/xorg/xserver/-/commit/bdca6c3d1f5057eeb3160
- https://www.zerodayinitiative.com/advisories/ZDI-24-407/