On Thu, Oct 22, 2009 at 11:28:46AM +0200, Richard Atterer wrote:
> Hello Mike,
> 
> thanks for noticing that w3c-libwww ships a vulnerable local copy of expat!
> 
> On Wed, Oct 21, 2009 at 06:40:08PM -0400, Michael Gilbert wrote:
> > hello, a security issue has been disclosed for expat.  see [0], [1].
> > w3c-libwww embeds expat, so it is also affected.  this affects all
> > supported debian releases, so please coordinate with the security team
> > to prepare DSAs.
> > 
> > mike
> > 
> > [0] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2625
> > [1] https://bugs.gentoo.org/show_bug.cgi?id=280615
> 
> w3c-libwww is currently at 5.4.0-11 in oldstable and unstable.
> 
> I want it removed from the archive because it is old and suffers from 
> bitrot, see #440436.
> 
> So I suggest the following:
> 
> * Simply remove it from unstable, this should be possible with minor 
> problems, see http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=440436#63

But please proceed with the removal from unstable by filing a removal
bug against ftp.debian.org. Amaya has been removed and the other users
have been fixed.
 
> * Fix the problem in oldstable by applying the security patch to libwww's 
> own copy of expat. Of course, eliminating the duplicate expat would be 
> cleaner, but the effort is hardly justified at this point, or what do you 
> think?
> 
> The bugfix patch is here, it applies to libwww's expat copy:
> https://bugs.gentoo.org/attachment.cgi?id=201849
> http://expat.cvs.sourceforge.net/viewvc/expat/expat/lib/xmltok_impl.c?r1=1.15&r2=1.13

Since CVE-2009-2625 doesn't allow code injection, but only DoS and given that 
libwww in oldstable is only used by wmweather, I think we can ignore it, unless
Nico wants to work on an update?

Cheers,
        Moritz



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