Microsoft Windows Font Embedding Out-Of-Bounds Read Information Disclosure Vulnerability

2017-10-10T00:00:00
ID ZDI-17-841
Type zdi
Reporter Jaanus Kp Clarified Security
Modified 2017-10-11T00:00:00

Description

This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of Microsoft Windows. 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 processing of embedded fonts within documents. 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 buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process.