August 16, 2007 11:39 AM PDT
Yahoo Messenger's Webcam invites may cause trouble
There's a new zero-day attack in progress against Yahoo Messenger users. The instant messaging solicitation invites users to open their Webcam. However, the code used in this China-based exploit causes a heap overflow to be triggered when the target accepts a Webcam invitation. That means a remote attacker could execute malicious code on a compromised machine.
The McAfee security blog recommends the following: do not accept Webcam invites from untrusted sources until a patch is released, and block outgoing traffic on TCP port 5100 on your firewall until a patch is released.
Yahoo has been informed and says it is working on a patch.
As CNET's resident security expert, Robert Vamosi has been interviewed on the BBC, CNN, MSNBC, and other outlets to share his knowledge about the latest online threats and to offer advice on personal and corporate security. Listen to his podcast at securitybites.cnet.com or e-mail Robert with your questions and comments. 
