#VU83407 Use-after-free in BlueZ - CVE-2021-43400

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Main Vulnerability Database Vulnerabilities #VU83407

#VU83407 Use-after-free in BlueZ - CVE-2021-43400

Published: November 22, 2023


Vulnerability identifier: #VU83407
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-43400
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability: No public exploit available
Vulnerable software:
BlueZ
Software vendor:
BlueZ Project

Description

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 updates from vendor's website.

External links