Adobe Acrobat Pro DC ImageConversion EMF EMR_ALPHABLEND Out-Of-Bounds Read Information Disclosure Vulnerability

2017-12-08T00:00:00
ID ZDI-17-941
Type zdi
Reporter Ke Liu of Tencent's Xuanwu LAB
Modified 2017-12-09T00:00:00

Description

This vulnerability allows remote attackers to disclose sensitive information 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 the parsing of EMR_ALPHABLEND records in EMF files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated object. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the current process.