Advisory Details

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of BlueZ. User interaction is required to exploit this vulnerability in that the target must connect to a malicious Bluetooth device.

The specific flaw exists within the handling of the Phone Book Access profile. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of root.

07/26/23 – ZDI reported the vulnerability to the vendor
12/18/23 – ZDI asked for updates and notified the vendor of the intention to publish the cases as 0-day advisories

-- Mitigation: Given the nature of the vulnerability, the only salient mitigation strategy is to restrict interaction with the application.

• 2023-04-26 - Vulnerability reported to vendor
• 2023-12-21 - Coordinated public release of advisory
• 2023-12-21 - Advisory Updated