wv2: Integer overflow

Background

wv2 is a filter library for Microsoft Word files, used in many Office suites.

Description

A boundary checking error was found in wv2, which could lead to an integer overflow.

Impact

An attacker could execute arbitrary code with the rights of the user running the program that uses the library via a maliciously crafted Microsoft Word document.

Workaround

There is no known workaround at this time.

Resolution

All wv2 users should update to the latest stable version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=app-text/wv2-0.2.3"