SB2020120313 - Heap-based buffer overflow in xorg-server (Alpine package)
Published: December 3, 2020
Security Bulletin ID
SB2020120313
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Heap-based buffer overflow (CVE-ID: CVE-2020-25712)
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:H/SI:H/SA:H/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 XkbSetDeviceInfo functionality. A local user can pass specially crafted data to the application, trigger heap-based buffer overflow and execute arbitrary code on the target system with elevated privileges.
Remediation
Install update from vendor's website.