A French website has posted exploit code for a critical vulnerability affecting Windows XP, NT, 2000, and Server 2003, only four days after Microsoft released a patch for the flaw on February 10, 2004. Microsoft urged users to apply the patch quickly, since it could be used to develop a worm similar to MS-Blast. According to Jay Heiser, chief analyst at TruSecure, the code circulating on the Web contains a payload for a distributed denial of service attack, but since it exploits a buffer overflow, can be used to engineer a more sophisticated attack. Computers that apply the patch should not be affected, but enough unpatched computers can cause havoc for the Internet as a whole.
http://news.zdnet.co.uk/internet/security/0,39020375,39146606,00.htm

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