Yahoo Plugs PNG Security Hole
The company releases an updated version of its Yahoo Messenger client for Windows to fix security issues uncovered earlier in the advanced graphics format.Yahoo Inc. has issued a security update to its popular instant messaging service to fix broader vulnerabilities in an advanced graphics format. Late on Tuesday, Yahoo posted a security update for its Windows version of Yahoo Messenger to fix a series of vulnerabilities in the PNG (portable network graphics) library, or libpng. The library provides a set of graphics routines for PNG files; PNG is an alternative graphics format to GIF. The PNG library holes, as previously reported, could allow an attacker to crash programs or execute attack code. A range of software makers have already released patches to fix the issue. Among them, Apple Computer Inc. updated Mac OS X, and the Mozilla Foundation released new versions of its open-source browsers.
Yahoo released the fix for users of Yahoo Messenger 6.0 for Windows because it uses the open-source PNG format in limited areas of its IM client to display images, said Yahoo spokeswoman Terrell Karlsten.