HEADS-UP: BIND denial-of-service vulnerability

[Jacques A. Vidrine]

Hello Everyone,

ISC has released new versions of BIND 8 which address a remotely
exploitable denial-of-service vulnerability that may allow an attacker
to perform `negative cache poisoning'--- convincing a name server that
certain RRs do not exist (even though they may).  I do not know of any
workaround at this time.

I have committed fixes to the RELENG_5_1 and RELENG_4_9 security
branches.  Due to personal obligations this evening [*], I will
likely not update RELENG_4_8 and RELENG_4_7 until sometime tomorrow.
Likewise, the advisory will follow tomorrow.  However, you can find
patches at the following URLs:

[FreeBSD -CURRENT, -STABLE, 4.9]
ftp://ftp.freebsd.org/pub/FreeBSD/CERT/patches/SA-03:19/bind-836.patch
ftp://ftp.freebsd.org/pub/FreeBSD/CERT/patches/SA-03:19/bind-836.patch.asc

[FreeBSD 5.1, 4.8]
ftp://ftp.freebsd.org/pub/FreeBSD/CERT/patches/SA-03:19/bind-834.patch
ftp://ftp.freebsd.org/pub/FreeBSD/CERT/patches/SA-03:19/bind-834.patch.asc

[FreeBSD 4.7, 4.6, 4.5, 4.4]
ftp://ftp.freebsd.org/pub/FreeBSD/CERT/patches/SA-03:19/bind-833.patch
ftp://ftp.freebsd.org/pub/FreeBSD/CERT/patches/SA-03:19/bind-833.patch.asc

(If you don't find them at ftp.freebsd.org, try ftp2.freebsd.org.)

I expect Doug Barton will upgrade BIND 8 in -STABLE and -CURRENT
tonight or tomorrow.

Cheers,
-- 
Jacques Vidrine   NTT/Verio SME      FreeBSD UNIX       Heimdal
nectar at celabo.org jvidrine at verio.net nectar at freebsd.org nectar at kth.se


[*] Happy Thanksgiving to those celebrating it, by the way!


----- Forwarded message from Jacques Vidrine <nectar at FreeBSD.org> -----

Date: Wed, 26 Nov 2003 16:54:53 -0800 (PST)
From: Jacques Vidrine <nectar at FreeBSD.org>
To: src-committers at FreeBSD.org, cvs-src at FreeBSD.org, cvs-all at FreeBSD.org
Subject: cvs commit: src UPDATING src/sys/conf newvers.sh src/contrib/bind
         Version src/contrib/bind/bin/named ns_resp.c
Message-Id: <200311270054.hAR0srnr052777 at repoman.freebsd.org>

nectar      2003/11/26 16:54:53 PST

  FreeBSD src repository

  Modified files:        (Branch: RELENG_5_1)
    .                    UPDATING 
    sys/conf             newvers.sh 
    contrib/bind         Version 
    contrib/bind/bin/named ns_resp.c 
  Log:
  Correct a remote denial-of-service attack in named(8).
  
  Revision      Changes    Path
  1.251.2.13    +3 -0      src/UPDATING
  1.1.1.11.2.1  +1 -1      src/contrib/bind/Version
  1.1.1.11.2.1  +9 -3      src/contrib/bind/bin/named/ns_resp.c
  1.50.2.13     +1 -1      src/sys/conf/newvers.sh


----- End forwarded message -----
----- Forwarded message from Jacques Vidrine <nectar at FreeBSD.org> -----

Date: Wed, 26 Nov 2003 16:56:06 -0800 (PST)
From: Jacques Vidrine <nectar at FreeBSD.org>
To: src-committers at FreeBSD.org, cvs-src at FreeBSD.org, cvs-all at FreeBSD.org
Subject: cvs commit: src UPDATING src/sys/conf newvers.sh src/contrib/bind
         Version src/contrib/bind/bin/named ns_resp.c
Message-Id: <200311270056.hAR0u62k052941 at repoman.freebsd.org>

nectar      2003/11/26 16:56:06 PST

  FreeBSD src repository

  Modified files:        (Branch: RELENG_4_9)
    .                    UPDATING 
    sys/conf             newvers.sh 
    contrib/bind         Version 
    contrib/bind/bin/named ns_resp.c 
  Log:
  Correct a remote denial-of-service attack in named(8).
  
  Revision          Changes    Path
  1.73.2.89.2.2     +12 -0     src/UPDATING
  1.1.1.3.2.9.2.1   +1 -1      src/contrib/bind/Version
  1.1.1.2.2.10.2.1  +9 -3      src/contrib/bind/bin/named/ns_resp.c
  1.44.2.32.2.2     +1 -1      src/sys/conf/newvers.sh


----- End forwarded message -----

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