SB2023112466 - Secure boot bypass in edk2
Published: November 24, 2023
Security Bulletin ID
SB2023112466
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Physical access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Unchecked Return Value (CVE-ID: CVE-2019-14560)
The vulnerability allows a local user to bypass implemented security restrictions.
The vulnerability exists due to an unchecked return value within the DxeImageVerificationHandler() function in SecurityPkg/Library/DxeImageVerificationLib/DxeImageVerificationLib.c. A local user can bypass the secure boot protection.
Remediation
Install update from vendor's website.