Advisory Details

September 16th, 2015

CODESYS Gateway Server Opcode 0x3ef Heap Buffer Overflow Remote Code Execution Vulnerability

CVE ID	CVE-2015-6460
CVSS SCORE	7.5, AV:N/AC:L/Au:N/C:P/I:P/A:P
AFFECTED VENDORS	Codesys
AFFECTED PRODUCTS	Gateway Server
TREND MICRO CUSTOMER PROTECTION	Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID ['19577']. 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 CODESYS Gateway Server. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of the 0x3ef opcode. An attacker can send a large buffer of data to the server which will cause a heap buffer overflow. An attacker can leverage this vulnerability to execute code under the context of the process.
ADDITIONAL DETAILS	Codesys has issued an update to correct this vulnerability. More details can be found at: https://ics-cert.us-cert.gov/advisories/ICSA-15-258-02
DISCLOSURE TIMELINE	2015-03-06 - Vulnerability reported to vendor 2015-09-16 - Coordinated public release of advisory
CREDIT	Josep Pi Rodriguez

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