MS15-013  Vulnerability in Microsoft Office Could Allow Security Feature Bypass

2015-02-10 This security update resolves one publicly disclosed vulnerability in Microsoft Office. The vulnerability could allow security feature bypass if a user opens a specially crafted Microsoft Office file. The security feature bypass by itself does not allow arbitrary code execution. However, an attacker could use this security feature bypass vulnerability in conjunction with another vulnerability, such as a remote code execution vulnerability, to run arbitrary code.
Vulnerabilities addressed in this bulletin:

Microsoft Office Component Use After Free Vulnerability

A security feature bypass vulnerability exists in Microsoft Office when it fails to use the Address Space Layout Randomization (ASLR) security feature, allowing an attacker to more reliably predict the memory offsets of specific instructions in a given call stack. The security feature bypass by itself does not allow arbitrary code execution.
CVE-2014-6362

Bulletin details at Microsoft.com