Date: Fri, 18 Mar 2011 13:05:38 -0600 From: Vincent Danen <vdanen@...hat.com> To: Raphael Geissert <geissert@...ian.org> Cc: oss-security@...ts.openwall.com, list@...adns.org, bressers@...hat.com, coley@...re.org Subject: Re: MaraDNS 1.4.06 and 1.3.07.11 released * [2011-03-18 12:52:32 -0600] Raphael Geissert wrote: >On Friday 18 March 2011 12:11:15 Vincent Danen wrote: >> * [2011-01-29 22:21:08 -0700] Sam Trenholme wrote: >> >In 2002, when I rewrote the compression code for MaraDNS for the first >> >time, I made a mistake in allocating an array of integers, allocating >> >it in bytes instead of sizeof(int) units. The resulted in a buffer >> >being too small, allowing it to be overwritten. >> > >> >The impact of this programming error is that MaraDNS can be crashed by >> >sending MaraDNS a single "packet of death". Since the data placed in >> >the overwritten array can not be remotely controlled (it is a list of >> >increasing integers), there is no way to increase privileges >> >exploiting this bug. >> > >> >The attached patch resolves this issue by allocating in sizeof(int) >> >units instead of byte-sized units for an integer array. In addition, >> >it uses a smaller array because a DNS name can only have, at most, 128 >> >labels. >> >> Was a CVE name ever assigned to this issue? > >Yes, Josh assigned CVE-2011-0520. >(his message is also recorded on the Debian bug you CC'ed) Sorry, I should have looked at the Debian bug. I was looking at the GMANE archive and only saw Tomas' reply the next day, but no further followups. Thanks! -- Vincent Danen / Red Hat Security Response Team
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