Exec Shield Overflow Protection
Ingo Molnar has announced a new kernel-based security feature for Linux/x86 called "Exec Shield". He describes the patch, which is against the 2.4.20-rc1 kernel, as, "The exec-shield feature provides protection against stack, buffer or function pointer overflows, and against other types of exploits that rely on overwriting data structures and/or putting code into those structures. The patch also makes it harder to pass in and execute the so-called 'shell-code' of exploits. The patch works transparently, ie. no application recompilation is necessary."
(Submitted by Jeremy Andrews Mon May 5, 2003 )
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