SB2024031382 - Ubuntu update for xorg-server

Description

This security bulletin contains information about 7 secuirty vulnerabilities.

1) Integer overflow (CVE-ID: CVE-2023-6478)

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

The vulnerability exists due to integer overflow when handling RRChangeProviderProperty or RRChangeOutputProperty requests. A local user can send a specially crafted request to the server, trigger an integer overflow and gain access to sensitive information.

2) Heap-based buffer overflow (CVE-ID: CVE-2023-6816)

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

The vulnerability exists due to a boundary error within the DeviceFocusEvent and ProcXIQueryPointer functions. A local user can trigger a heap-based buffer overflow and execute arbitrary code on the target system.

3) Race condition (CVE-ID: CVE-2024-0229)

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

The vulnerability exists due to a race condition when reattaching to a different master device. A local user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.

4) Input validation error (CVE-ID: CVE-2024-0408)

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to incorrectly labeled GLX PBuffers. A local user can perform a denial of service (DoS) attack.

5) Resource management error (CVE-ID: CVE-2024-0409)

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper handling of the curser code when used with SELinux. A local user can perform a denial of service (DoS) attack.

6) Heap-based buffer overflow (CVE-ID: CVE-2024-21885)

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

The vulnerability exists due to a boundary error within the XISendDeviceHierarchyEvent() function. A local user can trigger a heap-based buffer overflow and execute arbitrary code on the target system.

7) Heap-based buffer overflow (CVE-ID: CVE-2024-21886)

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

The vulnerability exists due to a boundary error within the DisableDevice() function. A local user can trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Remediation

Install update from vendor's website.

References

• https://ubuntu.com/security/notices/USN-6587-5