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MS adds ALSR in Windows Vista Beta 2

(Address Space Layout Randomization)

3:55 am on May 31, 2006 (gmt 0)

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article [p101.news.scd.yahoo.com]

Several open-source security systems --OpenBSD, PaX and Exec Shield -- already implement ASLR, which is described as a security feature that randomly arranges the positions of key data areas to prevent malicious hackers from predicting target addresses.


"[It] is a useful defense because it makes Windows systems look "different" to malware, making automated attacks harder," Howard said.

"In short, when you boot a Windows Vista Beta 2 computer, we load system code into different locations in memory. This helps defeat a well-understood attack called 'return-to-libc', where exploit code attempts to call a system function," Howard explained.