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Stop Buffer Overflow Attacks against Unpatched Vulnerabilities

Buffer Overflows, the favorite target of malicious hackers and seemingly the biggest bug in off the shelf software, are a serious problem for security managers. Until recently, all that users of 32bit Windows systems could do was ensure each of their applications, including the OS, had all released security patches applied and then hope for the best. With the releases of Windows XP SP2 and Windows Server 2003 SP1 that all changed.

Intel's Execute Disable (XD) support and AMD's support for No Execute (NX) technology is supported on Windows XP SP2 and Windows Server 2003 SP1 platforms. XD and NX help prevent buffer overflows at the OS level by setting a bit to turn off execution capabilities for certain pages of memory that don't specifically contain executable code. This isn't new technology. It was first available for Intel 64-bit Itanium processors in 2001. Stop Buffer Overflow Attacks against Unpatched Vulnerabilities

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