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Adobe Acrobat Reader DC XFA Array Index Integer Underflow Remote Code Execution Vulnerability

Reference ID: SSA-1703
Publication date: 11.04.2017
Severity: critical

Affected products/versions:
Adobe Acrobat Reader DC (15.023.20070 and earlier versions)

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Adobe Acrobat Reader 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 XFA’s Array Index. The issue results from the lack of proper validation of user-supplied data which can result in an integer underflow before allocating a buffer. An attacker can leverage this vulnerability to execute code under the context of the current process.

References:
ZDI-17-260
CVE-2017-3034
Adobe Security Bulletin APSB17-11