Date: Tue, 8 Jul 2008 08:39:54 -0600 From: Vincent Danen <vdanen@...sec.ca> To: oss-security@...ts.openwall.com Subject: Re: Re: CVE Request (pidgin) * [2008-07-05 13:56:00 +0200] Nico Golde wrote: >Hi Vincent, >* Vincent Danen <vdanen@...sec.ca> [2008-07-03 21:42]: >> * [2008-07-01 17:25:40 -0400] Steven M. Christey wrote: >> >Name: CVE-2008-2957 >> >Status: Candidate >> >URL: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2957 >> >Reference: MISC:http://crisp.cs.du.edu/?q=ca2007-1 >> >Reference: MLIST:[oss-security] 20080627 CVE Request (pidgin) >> >Reference: URL:http://www.openwall.com/lists/oss-security/2008/06/27/3 >> > >> >The UPnP functionality in Pidgin 2.0.0, and possibly other versions, >> >allows remote attackers to trigger the download of arbitrary files and >> >cause a denial of service (memory or disk consumption) via a UDP >> >packet that specifies an arbitrary URL. >> >> There are patches with the original advisory for these two. Has anyone >> had a chance to look at them to make sure they're ok? I don't see any >> references to any of these issues on the pidgin website and no vendors >> have issued pidgin updates for these that I can see, so I'm wondering if >> anyone has looked at these patches (be it vendors or upstream) to >> determine whether or not they're sufficient and/or suitable to apply to >> a security update. > >I just had a look at http://crisp.cs.du.edu/crisp-files/pidgin-2.0.0-upnp-limit-download.diff >to fix CVE-2008-2957. I think the patch itself is fine >however I am not sure if this is the right way to fix the >issue cause I basically just workarounds the problem by >limiting the downloads triggered by UPnP (128k) without >giving any way to reconfigure this value or to switch it off >completely. This may be the reason why there isn't yet an >official patch by the pidgin people. > >If you want to go with that simple workaround the patch is >just fine. Thanks for looking at it, Nico. I think the consensus of the Pidgin developers is that neither issue is very serious, which I think is another reason why it hasn't been fixed upstream yet. I think that I'm going to do is just wait for them to fix it upstream before fixing anything (if they determine it isn't really a vulnerability, then I'd rather not waste my time fixing something that isn't really an issue). -- Vincent Danen @ http://linsec.ca/ Content of type "application/pgp-signature" skipped
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