Date: Thu, 19 Feb 2015 17:38:31 -0800 From: Paul Pluzhnikov <ppluzhnikov@...gle.com> To: oss-security@...ts.openwall.com Subject: Re: Fixing the glibc runtime linker On Thu, Feb 19, 2015 at 2:19 PM, Tim Brown <tmb@...35.com> wrote: > More often than not, the underlying issue is an empty element within the > DT_RPATH header or equivalent. Sometimes it's not, but even in those cases, it > is largely that one or more elements isn't qualifed (i.e. it doesn't start > with /). The attached patch fixes this, by ignoring any elements of DT_RPATH, > LD_LIBRARY_PATH that do not start with a /, and/or junking any use of dlopen > where the filename is likewise unqualified. > > Won't this break stuff? FWIW, relative RPATHs are quite fundamental to our test execution environment, and any patch that unconditionally ignores them would have to be reverted in our tree. Also, don't you want to discuss this on libc-alpha? oss-security could be all for it, but without buy-in from libc-alpha your patch is unlikely to be going anywhere. -- Paul Pluzhnikov
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