SB2021110523 - Arbitrary code execution in BlueZ
Published: November 5, 2021 Updated: November 22, 2023
Security Bulletin ID
SB2021110523
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Physical access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2021-43400)
The vulnerability allows an attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in gatt-database.c on a gatt server if a client disconnects while a WriteValue call is being processed with D-Bus. An attacker with physical proximity to the system can trigger a use-after-free error and potentially execute arbitrary code.
Remediation
Install update from vendor's website.