SB2024011648 - Multiple vulnerabilities in X.org Server and Xwayland
Published: January 16, 2024 Updated: February 12, 2024
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 6 vulnerabilities.
1) Heap-based buffer overflow (CVE-ID: CVE-2024-21886)
CWE-ID: CWE-122 - Heap-based Buffer Overflow
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
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.
2) Heap-based buffer overflow (CVE-ID: CVE-2024-21885)
CWE-ID: CWE-122 - Heap-based Buffer Overflow
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
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.
3) Resource management error (CVE-ID: CVE-2024-0409)
CWE-ID: CWE-399 - Resource Management Errors
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
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.
4) Input validation error (CVE-ID: CVE-2024-0408)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
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) Race condition (CVE-ID: CVE-2024-0229)
CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
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.
6) Heap-based buffer overflow (CVE-ID: CVE-2023-6816)
CWE-ID: CWE-122 - Heap-based Buffer Overflow
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
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.
Remediation
Install update from vendor's website.
References
- https://ubuntu.com/security/CVE-2024-21886
- https://www.zerodayinitiative.com/advisories/ZDI-24-119/
- https://ubuntu.com/security/CVE-2024-21885
- https://www.zerodayinitiative.com/advisories/ZDI-24-120/
- https://ubuntu.com/security/CVE-2024-0409
- https://ubuntu.com/security/CVE-2024-0408
- https://ubuntu.com/security/CVE-2024-0229
- https://www.zerodayinitiative.com/advisories/ZDI-24-121/
- https://www.zerodayinitiative.com/advisories/ZDI-24-123/
- https://www.zerodayinitiative.com/advisories/ZDI-24-122/