Advisory Details

December 2nd, 2015

Unitronics UniDownloader and Unitronics VisiLogic OPLC IDE IPWorksSSL.HTTPS.1 ActiveX Control PostDataB/FirewallDataB Properties Remote Code Execution Vulnerability

ZDI-15-576
ZDI-CAN-2965

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 and Unitronics VisiLogic OPLC IDE. 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 processing of the PostDataB and FirewallDataB properties of the IPWorksSSL.HTTPS.1 ActiveX control. Both properties take a value from the script and treat it as the address of a SafeArray and then process information from the SafeArray structure. An attacker can leverage this type confusion to execute arbitrary code under 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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