On Tue, Jan 29, 2008 at 09:16:24PM +0000, Moritz Muehlenhoff wrote: > Fortify Source > ============== > > This feature adds validation for internal C functions such as strcpy > for buffer sizes known during compile time. While vulnerabilities in > the functions it protects have become uncommon in high-profile apps, > it will be useful for fringe packages we have in the archive. > > This feature is present in glibc since version 2.5, and is enabled > through the use of "-D_FORTIFY_SOURCE=2" and "-O2" or higher. >
Well, -D_FORTIFY_SOURCE=2 is a severe performance loss in many applications, and I wouldn't recommend activating it by default. =1 has not the drawback with that regard though, but is less useful security wise (though it catch many programmatic issues, and full archive rebuild with -D_FORTIFY_SOURCE=1 would be worthwile independently of this).
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