Advisory Details

December 20th, 2017

WECON LeviStudio PLC Driver Heap-based Buffer Overflow Remote Code Execution Vulnerability

CVE ID	CVE-2017-16717
CVSS SCORE	6.8, AV:N/AC:M/Au:N/C:P/I:P/A:P
AFFECTED VENDORS	Wecon
AFFECTED PRODUCTS	LeviStudio
TREND MICRO CUSTOMER PROTECTION	Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID ['29752']. 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 WECON LeviStudio. 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 in the handling of LeviStudio Project files. When parsing the Driver field, the process does not properly validate the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code under the context of the current process.
ADDITIONAL DETAILS	Wecon has issued an update to correct this vulnerability. More details can be found at: https://ics-cert.us-cert.gov/advisories/ICSA-17-353-05
DISCLOSURE TIMELINE	2017-08-11 - Vulnerability reported to vendor 2017-12-20 - Coordinated public release of advisory
CREDIT	Michael DePlante

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