Some of the world's most popular Windows programs are vulnerable to attacks that exploit a major bug in the way they load critical code libraries, according to sites tracking attack code. Among the Windows applications that are vulnerable to exploits that many have dubbed "DLL load hijacking" are the Firefox, Chrome, Safari and Opera browsers; Microsoft's Word 2007; Adobe's Photoshop; Skype; and the uTorrent BitTorrent client. "Fast and furious, incredibly fast," said Andrew Storms, director of security operations for nCircle Security, referring to the pace of postings of exploits that target the vulnerability in Windows software. Called "DLL load hijacking" by some, the exploits are dubbed "binary planting" by others. On Monday, Microsoft confirmed reports of unpatched vulnerabilities in a large number of Windows programs, then published a tool it said would block known attacks. The flaws stem from the way many Windows applications call code libraries -- dubbed "dynamic-link library," or "DLL" -- that give hackers wiggle room they can exploit by tricking an application into loading a malicious file with the same name as a required DLL.

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