Advisory Details

December 2nd, 2015

Unitronics VisiLogic OPLC IDE TChart.ITChart ActiveX Control RemoveSeries Remote Code Execution Vulnerability

CVE ID	CVE-2015-6478
CVSS SCORE	6.8, AV:N/AC:M/Au:N/C:P/I:P/A:P
AFFECTED VENDORS	Unitronics
AFFECTED PRODUCTS	VisiLogic OPLC IDE
TREND MICRO CUSTOMER PROTECTION	Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID ['19815']. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
VULNERABILITY DETAILS	This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of 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 the TeeChart object in TeeChart5.ocx. The RemoveSeries method of the object takes a user-supplied integer as an index into an array of object pointers. The index is not checked for validity and this can cause arbitrary memory to be interpreted as an object. An attacker can leverage this vulnerability to execute arbitrary code under the context of the user.
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
DISCLOSURE TIMELINE	2015-04-30 - Vulnerability reported to vendor 2015-12-02 - Coordinated public release of advisory
CREDIT	Steven Seeley of Source Incite

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