Date: Wed, 28 Jan 2015 13:03:41 -0500 (EST) From: cve-assign@...re.org To: Huzaifa Sidhpurwala <huzaifas@...hat.com> cc: oss-security@...ts.openwall.com, Mitre CVE assign department <cve-assign@...re.org> Subject: Re: GHOST gethostbyname() heap overflow in glibc (CVE-2015-0235) On Wed, 28 Jan 2015, Huzaifa Sidhpurwala wrote: > On 01/27/2015 11:35 PM, Florian Weimer wrote: >> * Marek Kroemeke: >> >>> We just noticed CVE-2015-0235 , and we thought we will drop this one >>> in - apologies for low quality , we didn't really have time yet to >>> analyse it, but it seems to be related, so it makes sense to patch >>> things once right ? >> >> It's not related, and we cannot patch it at the same time because >> packages for the gethostbyname issue are already ready, they just have >> to be released. (When we change critical system components, we also >> need to be extra-careful with testing, which takes time.) >> >> Andreas Schwab fixed this in 2011: >> >> <https://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=2e96f1c7> >> >> If I'm not mistaken, this commit when into glibc 2.15. >> >> I have not yet found the corresponding glibc bug (if it exists). >> >> The bug only materializes if the getaddrinfo functions is called with >> the AI_IDN flag, and if glibc has been compiled with libidn support >> (but I haven't checked if you can switch that off these days). >> > > MITRE, > > This is a new flaw, can you please assign a CVE id to this? > > https://bugzilla.redhat.com/show_bug.cgi?id=797096 > > Thanks! > > -- > Huzaifa Sidhpurwala / Red Hat Product Security Team Use CVE-2012-6686 for "unbound alloca use in glob_in_dir" as covered by Red Hat Bugzilla ID 797096. How is 797096 related to the 2e96f1c7 commit? The 2e96f1c7 commit does not appear to be directly related to alloca usage; it concentrates on setting "malloc_name = true" in gaih_inet(). However, a submitted patch for Bugzilla 797096 (https://bugzilla.redhat.com/attachment.cgi?id=583711&action=diff) performs includes much more extensive changes to gaih_inet(), modifies other functions, and omits the "name = p;" logic that is used in 2e96f1c7. Also, 797096 is marked as "closed" and points to RHBA-2013:0022-2, which references CVE-2013-4357, which is RH Bug 1009643, which says "glibc: stack overflow in getaddrinfo()'s use of alloca()." --- CVE assignment team, MITRE CVE Numbering Authority M/S M300 202 Burlington Road, Bedford, MA 01730 USA [ PGP key available through http://cve.mitre.org/cve/request_id.html ]
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