Date: Fri, 07 Sep 2012 11:29:33 -0600 From: Jeff Law <law@...hat.com> To: Kurt Seifried <kseifried@...hat.com> CC: oss-security@...ts.openwall.com, Jan Lieskovsky <jlieskov@...hat.com>, "Steven M. Christey" <coley@...us.mitre.org>, Florian Weimer <fweimer@...hat.com>, Jakub Jelinek <jakub@...hat.com> Subject: Re: CVE Request -- glibc: strcoll() integer overflow leading to buffer overflow + another alloca() stack overflow issue (upstream #14547 && #14552) On 09/07/2012 11:21 AM, Kurt Seifried wrote: >> 2) Issue #2 (mentioned here only for completeness, but I am not of >> the opinion this should receive a CVE identifier. See argumentation >> below [but open to glibc upstream / others to disprove it]). > > I will hold off on issuing a CVE for this then. Anyone want to weigh in? >> alloca() stack overflow (first issue from the report below) >> Upstream bug report:  >> http://sourceware.org/bugzilla/show_bug.cgi?id=14552 >> >> If I have looked correctly this is expected / known behaviour of >> alloca() - from the manual page:  >> http://linux.die.net/man/3/alloca Just because it's known/expected behaviour doesn't mean it's not a potential attack vector. Blowing out the stack is definitely a vector for attack: http://www.phrack.org/issues.html?issue=67&id=9#article http://www.phrack.com/issues.html?issue=63&id=14#article Jeff
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