(0Day) Pulse Secure Client SetupService Directory Traversal Local Privilege Escalation Vulnerability
Vulnerability Details
This vulnerability allows local attackers to escalate privileges on affected installations of Pulse Secure Client. 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 SetupService. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the service.
Additional Details
07/08/22 – ZDI requested a vendor PSIRT contact.
07/13/22 – ZDI asked for an update.
07/26/22 – The vendor provided contact information.
07/27/22 – The ZDI reported the vulnerability to the vendor.
08/02/22 – The vendor acknowledged the report.
06/08/23 – The ZDI asked for an update and informed the vendor that the case will be published as a zero-day advisory on 06/14/23.
-- Mitigation: Given the nature of the vulnerability, the only salient mitigation strategy is to restrict interaction with the application.
Disclosure Timeline
- 2022-07-27 - Vulnerability reported to vendor
- 2023-06-14 - Coordinated public release of advisory
Credit
Anonymous
