Date: Sat, 14 Sep 2013 12:56:02 +0200 From: Florian Weimer <fweimer@...hat.com> To: oss-security@...ts.openwall.com Subject: Re: Re: CVE Request: glibc getaddrinfo() stack overflow On 08/22/2013 09:18 AM, Florian Weimer wrote: > On 07/04/2013 09:06 PM, Maksymilian wrote: >>> Perhaps there are some missing CVE ids? >> >> In 2011 the problem with alloca() was not defined as a vulnerability. >> >> http://sourceware.org/bugzilla/show_bug.cgi?id=12671 > > I believe the analysis in this bug report is incorrect. The security > implications are unclear. A straight copy of a long name to a stack > buffer should trigger a crash because it hits the guard page, but even > that could be a problem for daemons. > > On the other hand, it's impossible to know for sure that no GCC version > ever lays out the stack in such a way that we end up with a problem. > Multi-threaded programs linking in script interpreters are more exposed > to these problems, too. Kurt told me that the above didn't make it sufficiently clear that I consider this issue CVE-worthy. -- Florian Weimer / Red Hat Product Security Team
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