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	    Caldera International, Inc. Security Advisory

Subject:		OpenServer: BIND buffer overflows
Advisory number: 	CSSA-2001-SCO.13
Issue date: 		2001 August 23
Cross reference:
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1. Problem Description
	
	The BIND subsystem contains several buffer overflows, detailed
	in CERT advisory CA-2001-02. This advisory announces the
	availability of a preliminary version of BIND 8.2.5. Since
	there is no packaged installation of this preliminary
	offering, it should only be installed by experienced system
	administrators. A formal installable fix containing this
	version of BIND is forthcoming.


2. Vulnerable Versions

	Operating System	Version		Affected Files
	------------------------------------------------------------------
	OpenServer		<= 5.0.6a	./etc/addr
						./etc/nsupdate
						./etc/dig
						./etc/dnsquery
						./etc/host
						./etc/named
						./etc/named-xfer
						./etc/ndc
						./usr/lib/libresolv.so.1
						./usr/lib/libsocket.so.2
						./usr/lib/libresolv.a
						./usr/lib/libsocket.a
						./usr/lib/libp/libresolv.so.1
						./usr/lib/libp/libsocket.a
						./usr/lib/libp/libsocket.so.2
						./usr/lib/libp/libresolv.a
						./usr/bin/nslookup
						./usr/include/resolv.h


3. Workaround

	None.


4. OpenServer

  4.1 Location of Fixed Binaries

	ftp://stage.caldera.com/pub/security/openserver/CSSA-2001-SCO.13/


  4.2 Verification

	md5 checksums:

	84e3a058fb2af36235e99831fb44d200	newbind.tar.Z


	md5 is available for download from

		ftp://stage.caldera.com/pub/security/tools/


  4.3 Installing Fixed Binaries

	Upgrade the affected binaries with the following commands:

	# uncompress /tmp/newbind.tar.Z
	# mkdir /tmp/newbind
	# cd /tmp/newbind
	# tar xvf /tmp/newbind.tar

	Replace each of the associated binaries with the one from this
	directory (after saving them somewhere else).


5. References

	http://www.cert.org/advisories/CA-2001-02.html

        This, and other advisories are located at
                http://stage.caldera.com/support/security

        This advisory addresses Caldera Security internal incident sr379322.

6. Disclaimer

	Caldera International, Inc. is not responsible for the misuse
	of any of the information we provide on our website and/or
	through our security advisories. Our advisories are a service
	to our customers intended to promote secure installation and
	use of Caldera International products.
	 
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