Advisory Details

December 2nd, 2015

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

ZDI-15-574
ZDI-CAN-2964

CVE ID CVE-2015-7905
CVSS SCORE 6.8, (AV:N/AC:M/Au:N/C:P/I:P/A:P)
AFFECTED VENDORS Unitronics
Unitronics
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.

ADDITIONAL DETAILS Unitronics has issued an update to correct this vulnerability. More details can be found at:
https://ics-cert.us-cert.gov/advisories/ICSA-15-274-02
Unitronics has issued an update to correct this vulnerability. More details can be found at:
https://ics-cert.us-cert.gov/advisories/ICSA-15-274-02
DISCLOSURE TIMELINE
  • 2015-05-28 - Vulnerability reported to vendor
  • 2015-12-02 - Coordinated public release of advisory
CREDIT Andrea Micalizzi (rgod)
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