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Date:      Sat, 29 Jun 2002 13:35:30 +1000
From:      Mark.Andrews@isc.org
To:        Brett Glass <brett@lariat.org>
Cc:        security@FreeBSD.ORG
Subject:   Re: libc flaw: BIND 9 closes most holes but also opens one 
Message-ID:  <200206290335.g5T3ZUm0059814@drugs.dv.isc.org>
In-Reply-To: Your message of "Fri, 28 Jun 2002 16:59:25 CST." <200206282259.QAA03790@lariat.org> 

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> I've installed BIND 9 on our main domain name server to shield systems
> (including Windows boxes, which may be vulnerable) from the libc hole.
> Unfortunately, according to ISC, BIND 9 comes with a version of
> libbind that's vulnerable. (See http://www.cert.org/advisories/CA-2002-19.htm
> l.)
> So, if you load up BIND 9 and an app that uses it (such as Sendmail) links
> to the vulnerable libbind, you're still exposed.
> 
> This problem may take even longer to mop up than I first thought (and I was
> pessimistic to start with). I was slated to build a new server today, but
> since 4.6-RELEASE-p1 isn't yet up on the Japanese snapshot server yet,
> I think I'll wait.
> 
> --Brett
> 
> To Unsubscribe: send mail to majordomo@FreeBSD.org
> with "unsubscribe freebsd-security" in the body of the message

	Firstly lib/bind is *not* built by default.  You have to
	explictly build it with "configure --enable-libbind".

	"libbind" is a *copy* of BIND 8's libbind which *is* fixed
	in 8.2.6 and 8.3.3.

	So don't enable libbind and if you have installed libbind from
	BIND 9, get one of the above BIND 8 releases and install there
	libbind.

	Mark
--
Mark Andrews, Internet Software Consortium
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews@isc.org

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