SB2016081714 - Fedora 25 update for dbxtool

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2016081714

SB2016081714 - Fedora 25 update for dbxtool

Published: August 17, 2016 Updated: April 24, 2025

Security Bulletin ID SB2016081714
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Secure Boot feature bypass (CVE-ID: CVE-2016-3320)

CWE-ID: CWE-284 - Improper Access Control

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 bypass security restrictions and gain elevated privileges on vulnerable system.

The vulnerability exists due Windows Secure Boot incorrectly loads boot manager. A local user with physical access to computer and local administrative rights can disable code integrity checks, allowing test-signed executables and drivers to be loaded onto a target device, and bypass Secure Boot Integrity Validation for BitLocker and Device Encryption security features.

Successful exploitation of this vulnerability will allow a local user to gain complete access to vulnerable system.


Remediation

Install update from vendor's website.

References