TippingPoint Zero Day Initiative
 

Unitronics UniDownloader and Unitronics VisiLogic OPLC IDE IPWorksSSL.HTTPS.1 ActiveX Control WinSockPath Property Remote Code Execution Vulnerability

ZDI-15-574: December 2nd, 2015

CVE ID

CVSS Score

Affected Vendors

Affected Products

    UniDownloader
    VisiLogic OPLC IDE

Vulnerability Details


This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Unitronics UniDownloader. 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 implementation of the WinSockPath property of the HTTPS ActiveX control. The control passes this property as the URL for a DLL to the LoadLibraryA API, which will automatically execute DllMain in the DLL. This can be leveraged by an attacker for remote code execution in the context of the process.

Vendor Response

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

Disclosure Timeline

    2015-05-28 - Vulnerability reported to vendor
    2015-12-02 - Coordinated public release of advisory

Credit

This vulnerability was discovered by:
    Andrea Micalizzi (rgod)