TippingPoint Zero Day Initiative

Tibbo AggreGate SCADA/HMI Apache Axis AdminService Arbitrary Class Instantiation Privilege Escalation Vulnerability

ZDI-15-572: November 20th, 2015


CVSS Score

Affected Vendors

Affected Products

Vulnerability Details

This vulnerability allows attackers to elevate privileges on vulnerable installations of Tibbo AggreGate SCADA/HMI. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the Windows service "AggreGate Server Service" (ag_server_service.exe). It offers the default Apache Axis AdminService, which can be contacted by local users to publish arbitrary classes via the 'deployment' method. An attacker can leverage this vulnerability to execute code under the context of SYSTEM.

Vendor Response

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

Disclosure Timeline

    2015-08-24 - Vulnerability reported to vendor
    2015-11-20 - Coordinated public release of advisory


This vulnerability was discovered by: