Check Point Advisories

Zend Zend Server Java Bridge Remote Code Execution

Check Point Reference: CPAI-2011-268
Date Published: 16 May 2011
Severity: Critical
Last Updated: Wednesday 18 July, 2012
Source:
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description Zend Server is a complete, enterprise-ready Web Application Server for running and managing PHP applications. An internal component, the Zend Java Bridge, provides PHP developers with a way to use existing Java code and build PHP applications that use Java code. A remote code execution vulnerability has been reported in the Java Bridge server component of Zend Server. The vulnerability is due to design weakness in javamw.jar which does not validate the origin of remote Java commands sent to it. A remote attacker may exploit this issue by sending a specially crafted request to the affected service. Successful exploitation of this vulnerability would lead to execution of arbitrary code on the target host.

Protection Overview

This protection will detect and block malformed requests made to the vulnerable server.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R80 / R77 / R75

  1. In the IPS tab, click Protections and find the Zend Zend Server Java Bridge Remote Code Execution protection using the Search tool and Edit the protection's settings.
  2. Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name:  Application Servers Protection Violation.
Attack Information:  Zend Zend Server Java Bridge remote code execution

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