Advisory Details

May 11th, 2016

Panasonic FPWIN Pro ReleaseBuffer Integer Overflow Out-Of-Bounds Write Remote Code Execution Vulnerability

CVE ID	CVE-2016-4496
CVSS SCORE	4.4, AV:L/AC:M/Au:N/C:P/I:P/A:P
AFFECTED VENDORS	Panasonic
AFFECTED PRODUCTS	FPWIN Pro
TREND MICRO CUSTOMER PROTECTION	Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID ['23795']. 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 Panasonic FPWIN Pro. 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 a project file. A specially-crafted project file will lead to a write beyond the end of a heap buffer in the ReleaseBuffer method of the CString object due to a confusion between signed and unsigned integers in the GetBlockFromStream method of the CSCString object. An attacker can leverage this vulnerability to attain code execution under the context of the current process.
ADDITIONAL DETAILS	Panasonic has issued an update to correct this vulnerability. More details can be found at: https://ics-cert.us-cert.gov/advisories/ICSA-16-131-01
DISCLOSURE TIMELINE	2016-01-19 - Vulnerability reported to vendor 2016-05-11 - Coordinated public release of advisory
CREDIT	Steven Seeley of Source Incite

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