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Re: CERT Advisory CA-2002-19 Buffer Overflow in Multiple DNS Resolver Libraries


Thanks for the comments.

Ah, I see your in-depth post on Bugtraq now (-;


>From your Bugtraq post, I got the impression that since I haven't
changed the defaults in /etc/nsswitch.conf -- i.e. my networks: line

  networks: files

I shouldn't have anything to worry about at the moment.  Does that
sound right?

I presume though that updated libc6 packages are being worked on --
Can anyone comment on this?

P.S. This recent string of problems:

       Apache chunk
       libc resolver / BIND
       Samba (haven't seen this in English news yet)

     in such a short period is the worst (in the sense of each of the
     problems being in fairly widely used packages and the problems
     being serious) I've experienced in my 7-8 years of system
     administration.  I've been dreading what the rest of "summer
     vacation" has in store for us...

From: Florian Weimer
Subject: Re: CERT Advisory CA-2002-19 Buffer Overflow in Multiple DNS Resolver Libraries
Date: Thu, 04 Jul 2002 08:40:31 +0200

> sen_ml@eccosys.com writes:
> > I see a claim that glibc isn't vulnerable at:
> >
> >   http://www.kb.cert.org/CERT_WEB/vul-notes.nsf/id/AAMN-5BMSW2
> >
> > Any comments?
> GNU libc in its current version does contain incorrect code from BIND
> 4.9.  It is vulnerable, though not in the way initially described by
> PINE-CERT.  However, most vendors (including, for example, OpenBSD)
> have fixed the same vulnerability while adressing the main issues
> raised by PINE-CERT.

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