Check Point Advisories

Unitronics UniDownloader and VisiLogic OPLC IDE IPWorksSSL.HTTPS Memory Corruption (CVE-2015-7905)

Check Point Reference: CPAI-2016-0160
Date Published: 1 Mar 2016
Severity: Medium
Last Updated: Tuesday 15 March, 2016
Source: Unitronics
Industry Reference:CVE-2015-7905
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable? Unitronics VisiLogic OPLC prior to V9.8.00
Unitronics UniDownloader prior to V5.0.24
Vulnerability Description A memory corruption vulnerability exists in Unitronics, VisiLogic OPLC IDE and UniDownloader. The vulnerability is due to untrusted pointer dereference on the SSLCertHandle parameter of the IPWorksSSL.HTTPS ActiveX control. A remote attacker could exploit this vulnerability by enticing a vulnerable user to open a crafted web page. Successful exploitation could lead to code execution in the context of the target user.

Protection Overview

This protection will detect and block attempts to exploit this vulnerability.

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 Unitronics UniDownloader and VisiLogic OPLC IDE IPWorksSSL.HTTPS Memory Corruption 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:  Web Client Enforcement Violation.
Attack Information:  Unitronics UniDownloader and VisiLogic OPLC IDE IPWorksSSL.HTTPS Memory Corruption

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