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To: bugtraq@securityfocus.com announce@lists.caldera.com
 security-alerts@linuxsecurity.com full-disclosure@lists.netsys.com

______________________________________________________________________________

			SCO Security Advisory

Subject:		Linux: various packet handling vunerabilities in ethereal
Advisory number: 	CSSA-2002-037.0
Issue date: 		2002 October 24
Cross reference:
______________________________________________________________________________


1. Problem Description

	The ASN.1 parser in Ethereal 0.9.2 and earlier allows remote
	attackers to cause a denial of service (crash) via a certain
	malformed packet, which causes Ethereal to allocate memory
	incorrectly, possibly due to zero-length fields.

	SMB dissector in Ethereal 0.9.3 and earlier allows remote
	attackers to cause a denial of service (crash) or execute
	arbitrary code via malformed packets that cause Ethereal to
	dereference a NULL pointer.

	Buffer overflow in X11 dissector in Ethereal 0.9.3 and earlier
	allows remote attackers to cause a denial of service (crash)
	and possibly execute arbitrary code while Ethereal is parsing
	keysyms.

	DNS dissector in Ethereal before 0.9.3 allows remote attackers
	to cause a denial of service (CPU consumption) via a malformed
	packet that causes Ethereal to enter an infinite loop.

	Vulnerability in GIOP dissector in Ethereal before 0.9.3
	allows remote attackers to cause a denial of service (memory
	consumption).


2. Vulnerable Supported Versions

	System				Package
	----------------------------------------------------------------------

	OpenLinux 3.1.1 Server		prior to ethereal-0.9.4-1.i386.rpm

	OpenLinux 3.1.1 Workstation	prior to ethereal-0.9.4-1.i386.rpm

	OpenLinux 3.1 Server		prior to ethereal-0.9.4-1.i386.rpm

	OpenLinux 3.1 Workstation	prior to ethereal-0.9.4-1.i386.rpm


3. Solution

	The proper solution is to install the latest packages. Many
	customers find it easier to use the Caldera System Updater, called
	cupdate (or kcupdate under the KDE environment), to update these
	packages rather than downloading and installing them by hand.


4. OpenLinux 3.1.1 Server

	4.1 Package Location

	ftp://ftp.sco.com/pub/updates/OpenLinux/3.1.1/Server/CSSA-2002-037.0/RPMS

	4.2 Packages

	9a40c4a30048082eddf7944d80ff4dbe	ethereal-0.9.4-1.i386.rpm

	4.3 Installation

	rpm -Fvh ethereal-0.9.4-1.i386.rpm

	4.4 Source Package Location

	ftp://ftp.sco.com/pub/updates/OpenLinux/3.1.1/Server/CSSA-2002-037.0/SRPMS

	4.5 Source Packages

	8f22f36b6603d154a09b7b3145d2d987	ethereal-0.9.4-1.src.rpm


5. OpenLinux 3.1.1 Workstation

	5.1 Package Location

	ftp://ftp.sco.com/pub/updates/OpenLinux/3.1.1/Workstation/CSSA-2002-037.0/RPMS

	5.2 Packages

	9260d8dee3344ae25b29a149be6af9e1	ethereal-0.9.4-1.i386.rpm

	5.3 Installation

	rpm -Fvh ethereal-0.9.4-1.i386.rpm

	5.4 Source Package Location

	SRPMS

	5.5 Source Packages

	256b4438061bbae6aab557728e179ee4	ethereal-0.9.4-1.src.rpm


6. OpenLinux 3.1 Server

	6.1 Package Location

	ftp://ftp.sco.com/pub/updates/OpenLinux/3.1/Server/CSSA-2002-037.0/RPMS

	6.2 Packages

	cc2c9ee1a4f25c264519061a937e0cda	ethereal-0.9.4-1.i386.rpm

	6.3 Installation

	rpm -Fvh ethereal-0.9.4-1.i386.rpm

	6.4 Source Package Location

	ftp://ftp.sco.com/pub/updates/OpenLinux/3.1/Server/CSSA-2002-037.0/SRPMS

	6.5 Source Packages

	e04a540fdddb2b48032d3ada7a5f6ae6	ethereal-0.9.4-1.src.rpm


7. OpenLinux 3.1 Workstation

	7.1 Package Location

	ftp://ftp.sco.com/pub/updates/OpenLinux/3.1/Workstation/CSSA-2002-037.0/RPMS

	7.2 Packages

	2f13e3ae77bbfeabae68fe358ad120c6	ethereal-0.9.4-1.i386.rpm

	7.3 Installation

	rpm -Fvh ethereal-0.9.4-1.i386.rpm

	7.4 Source Package Location

	ftp://ftp.sco.com/pub/updates/OpenLinux/3.1/Workstation/CSSA-2002-037.0/SRPMS

	7.5 Source Packages

	e18cd26d3cee11344e80432b9043b732	ethereal-0.9.4-1.src.rpm


8. References

	Specific references for this advisory:
		http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0353
		http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0401
		http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0402
		http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0403
		http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0404
		http://www.ethereal.com/appnotes/enpa-sa-00004.html

	SCO security resources:
		http://www.sco.com/support/security/index.html

	This security fix closes SCO incidents sr863791, fz520851,
	erg712037.


9. Disclaimer

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

______________________________________________________________________________

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