-----BEGIN PGP SIGNED MESSAGE-----

===========================================================================
             AUSCERT External Security Bulletin Redistribution

       ESB-2002.072 -- Caldera International, Inc. Security Advisory
CSSA-2002-SCO.4 - Open UNIX, UnixWare 7: snmpd memory fault vulnerabilities
                             13 February 2002

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:                snmpd
Vendor:                 Caldera
Operating System:       Open UNIX 8.0.0
                        UnixWare 7 7.1.1
                        UnixWare 7 7.1.0
                        UNIX
Impact:                 Denial of Service
                        Root Compromise
Access Required:        Remote

Ref:                    AL-2002.02
                        ESB-2002.065

- --------------------------BEGIN INCLUDED TEXT--------------------

___________________________________________________________________________

	    Caldera International, Inc. Security Advisory

Subject:		Open UNIX, UnixWare 7: snmpd memory fault vulnerabilities
Advisory number: 	CSSA-2002-SCO.4
Issue date: 		2002 February 12
Cross reference:
___________________________________________________________________________


1. Problem Description

	The University of Oulu (Finland) wrote approximately 53000
	tests for snmpd error conditions.  For Open UNIX and UnixWare,
	94 of the tests caused snmpd to memory fault. This could lead
	to denial-of-service attacks, or possible local and remote
	root acquisition.


2. Vulnerable Supported Versions

	Operating System	Version		Affected Files
	------------------------------------------------------------------
	Open UNIX		8.0.0		/usr/lib/libsnmp.so
	UnixWare 7		7.1.1		/usr/lib/libsnmp.so
	UnixWare 7		7.1.0		/usr/lib/libsnmp.so


3. Workaround

	If snmp is not a needed service:

	add an 'exit 0' statement (without the single quotes) as the
	first executable line of /etc/rc2.d/S73snmp,

		-or-

	remove the execute bits from the in.snmpd binary,

		# chmod 0 /usr/sbin/in.snmpd


4. Open UNIX 8.0.0

  4.1 Location of Fixed Binaries

	ftp://stage.caldera.com/pub/security/openunix/CSSA-2002-SCO.4/


  4.2 Verification

	MD5 (erg711937.Z) =3D 62f81d5f7e0c5e0f4a2704e015d37fc4


	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:

	Download erg711937.Z to the /tmp directory

	# uncompress /tmp/erg711937.Z
	# pkgadd -d /tmp/erg711937


5. UnixWare 7.1.1

  5.1 Location of Fixed Binaries

	ftp://stage.caldera.com/pub/security/openunix/CSSA-2002-SCO.4/


  5.2 Verification

	MD5 (erg711937b.Z) =3D 09b8dbdb080e5588c6f61669ea914af7


	md5 is available for download from
		ftp://stage.caldera.com/pub/security/tools/


  5.3 Installing Fixed Binaries

	Upgrade the affected binaries with the following commands:

	Download erg711937b.Z to the /tmp directory

	# uncompress /tmp/erg711937b.Z
	# pkgadd -d /tmp/erg711937b


6. UnixWare 7.1.0

  6.1 Location of Fixed Binaries

	ftp://stage.caldera.com/pub/security/openunix/CSSA-2002-SCO.4/


  6.2 Verification

	MD5 (erg711937c.Z) =3D f15696cfc2b9f0afc1b0432bb311151a


	md5 is available for download from
		ftp://stage.caldera.com/pub/security/tools/


  6.3 Installing Fixed Binaries

	Upgrade the affected binaries with the following commands:

	Download erg711937c.Z to the /tmp directory

	# uncompress /tmp/erg711937c.Z
	# pkgadd -d /tmp/erg711937c


7. References

	http://www.cert.org/advisories/CA-2002-03.html


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

	This advisory addresses Caldera Security internal incidents
	sr858479, fz519781, erg711937.


8. 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.


9. Acknowledgements

	This vulnerability was discovered and researched by the
	University of Oulu (oulu.fi).



___________________________________________________________________________


- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content.  The decision to use any or all of this information is
the responsibility of each user or organisation, and should be done so in
accordance with site policies and procedures.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the original authors to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

	http://www.auscert.org.au/Information/advisories.html

If you believe that your system has been compromised, contact AusCERT or
your representative in FIRST (Forum of Incident Response and Security
Teams).

Internet Email: auscert@auscert.org.au
Facsimile:	(07) 3365 7031
Telephone:	(07) 3365 4417 (International: +61 7 3365 4417)
		AusCERT personnel answer during Queensland business hours
		which are GMT+10:00 (AEST).
		On call after hours for emergencies.

-----BEGIN PGP SIGNATURE-----
Version: 2.6.3i
Charset: noconv
Comment: ftp://ftp.auscert.org.au/pub/auscert/AUSCERT_PGP.key

iQCVAwUBPGqFzih9+71yA2DNAQG4BwP/doDO0NKUQPczfprQ9ekCk/fylpH8X8n4
F9vFdoOhE39h8c1b6FrYfnLqOPABL5dor5PuGdPa9yi2v2dSN820cz/8m/V+tP3z
AyBcfGyD4mj9q7w/MPTBGohXNHWNnEqsC6vrbeQoIAiL5WrrPhUDb+kje+T8Im3p
nB276Iag524=
=z/Kf
-----END PGP SIGNATURE-----