Date: Thu, 22 Aug 2013 09:18:59 +0200 From: Florian Weimer <fweimer@...hat.com> To: oss-security@...ts.openwall.com Subject: Re: Re: CVE Request: glibc getaddrinfo() stack overflow 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. -- Florian Weimer / Red Hat Product Security Team
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