Microsoft Office Excel Chart Object Use-After-Free Information Disclosure Vulnerability

2015-07-14T00:00:00
ID ZDI-15-327
Type zdi
Reporter 3S Labs
Modified 2015-11-09T00:00:00

Description

This vulnerability allows remote attackers to read freed memory on vulnerable installations of Microsoft Office Excel. 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 processing of chart objects. A specially crafted chart object can cause Excel to load information from memory that has already been freed. An attacker can leverage this vulnerability to disclose information under the context of the current process.