Advisory Details

August 8th, 2017

Adobe Acrobat Pro DC ImageConversion EMF Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability

CVE ID	CVE-2017-3121
CVSS SCORE	6.8, AV:N/AC:M/Au:N/C:P/I:P/A:P
AFFECTED VENDORS	Adobe
AFFECTED PRODUCTS	Acrobat Pro DC
TREND MICRO CUSTOMER PROTECTION	Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID ['27948']. 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 Adobe Acrobat Pro DC. 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 ImageConversion's EMF parsing. The issue results from the lack of proper validation of 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 in the context of the current process.
ADDITIONAL DETAILS	Adobe has issued an update to correct this vulnerability. More details can be found at: https://helpx.adobe.com/security/products/acrobat/apsb17-24.html
DISCLOSURE TIMELINE	2017-03-23 - Vulnerability reported to vendor 2017-08-08 - Coordinated public release of advisory
CREDIT	Ke Liu of Tencent's Xuanwu LAB

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