SB2021071621 - Anolis OS update for edk2
Published: July 16, 2021 Updated: March 28, 2025
Security Bulletin ID
SB2021071621
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 security vulnerability.
1) Heap-based buffer overflow (CVE-ID: CVE-2021-28211)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the LzmaUefiDecompressGetInfo() function. A local user can run a specially crafted program to trigger a heap-based buffer overflow and execute arbitrary code with elevated privileges.
Remediation
Install update from vendor's website.