Microsoft have confirmed there is a Vulnerability in their Windows 7 which is related to the Microsoft built network file and printer sharing protocol. This Windows 7 Vulnerability allows hackers to crash the Windows 7 system through the use of denial of service attacks.
Microsoft is investigating new public reports of a possible denial of service vulnerability in the Server Message Block (SMB) protocol. This vulnerability cannot be used to take control of or install malicious software on a user’s system. However, Microsoft is aware that detailed exploit code has been published for the vulnerability. Microsoft is not currently aware of active attacks that use this exploit code or of customer impact at this time. Microsoft is actively monitoring this situation to keep customers informed and to provide customer guidance as necessary.
You can block this threat until a patch is released by blocking two TCP ports139 and 445 in your firewall.
Via Gadget Venue