Date: Thu, 3 Jul 2008 13:49:53 -0400 From: Jamie Strandboge <jamie@...onical.com> To: "Steven M. Christey" <coley@...us.mitre.org> Cc: oss-security@...ts.openwall.com, Jamie Strandboge <jamie@...onical.com> Subject: Re: CVE request for dnsmasq DoS On Tue, 01 Jul 2008, Steven M. Christey wrote: > > On Mon, 30 Jun 2008, Jamie Strandboge wrote: > > > Hi, > > > > There is a remote DoS in dnsmasq 2.25 (and presumably earlier) that is > > fixed in 2.26. Details can be found at . Can we get a CVE assigned > > for this? > > I'm not sure I fully understand Thierry Carrez' comment about the security > implications of this issue. It seems like an exploit would require a > malicious DHCP server, in which case isn't DHCP service already > compromised? If so, then a crash of dnsmasq (null dereference?) doesn't > seem to be any worse than the loss of DHCP itself. > I haven't had time to develop a PoC, but from the dnsmasq 2.26 announce page at , a client need only send a crafted renewal request to crash the server. Thierry's comments were only for trying to reproduce the problem and test the patch. Jamie  http://freshmeat.net/projects/dnsmasq/?branch_id=1991&release_id=217681 -- Ubuntu Security Engineer | http://www.ubuntu.com/ Canonical Ltd. | http://www.canonical.com/ Download attachment "signature.asc" of type "application/pgp-signature" (190 bytes)
Powered by blists - more mailing lists
Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.
Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.