TippingPoint Zero Day Initiative

Persistent Systems Client Automation Remote Elevation of Privilege Vulnerability

ZDI-15-039: February 10th, 2015


CVSS Score

Affected Vendors

Affected Products

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Persistent Systems Client Automation. Authentication is required to exploit this vulnerability.

The specific flaw exists within the handling of certain requests (including getUsers, addAssigneesToRole, and removeAssigneesFromRole). Incomplete authentication allows for crafted packets to enumerate the users on the system and change the roles of users on the system without valid credentials. By using this, an attacker with access to any valid account on the system is able to execute arbitrary code on all clients controlled by the system.

Vendor Response

Persistent Systems has issued an update to correct this vulnerability. More details can be found at:

Disclosure Timeline

    2014-04-16 - Vulnerability reported to vendor
    2015-02-10 - Coordinated public release of advisory


This vulnerability was discovered by:
    Andrea Micalizzi aka rgod