Advisory Details

This vulnerability allows local attackers to escalate privileges on affected installations of Poly Plantronics Hub. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

The specific flaw exists within the Spokes Update Service. By creating a symbolic link, an attacker can abuse the service to delete a file. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM.

08/10/22 – ZDI reported the vulnerability to the vendor.

12/15/23 – ZDI asked for an update.

06/17/24 – ZDI attempted to contact the vendor once more using the PSIRT contact information on their website, as well as trying to reach them via support channels with no response.

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

• 2022-08-10 - Vulnerability reported to vendor
• 2024-06-18 - Coordinated public release of advisory