bugtraq - UnixWare 7.1.4 UnixWare 7.1.3 UnixWare 7.1.1 : wu-ftp denial of service

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Message-ID: <20050607172138.A2526@caldera.com>
Date: Tue, 7 Jun 2005 17:21:38 -0700
From: please_reply_to_security@....com
To: security-announce@...t.sco.com, bugtraq@...urityfocus.com,
	full-disclosure@...ts.grok.org.uk
Subject: UnixWare 7.1.4 UnixWare 7.1.3 UnixWare 7.1.1 :
	wu-ftp denial of service



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______________________________________________________________________________

			SCO Security Advisory

Subject:		UnixWare 7.1.4 UnixWare 7.1.3 UnixWare 7.1.1 : wu-ftp denial of service
Advisory number: 	SCOSA-2005.28
Issue date: 		2005 June 06
Cross reference:	sr893935 fz532336 erg712855 CAN-2005-0256
______________________________________________________________________________


1. Problem Description

	The wu_fnmatch function in wu_fnmatch.c for wu-fptd 2.6.1
	and 2.6.2 allows remote attackers to cause a denial of
	service (CPU exhaustion by recursion) via a glob pattern
	with a large number of SCOSA-2005.28.in SCOSA-2005.28.txt
	erg712855.711.pkg.Z erg712855.711.txt erg712855.713.pkg.Z
	erg712855.713.txt (wildcard) characters, as demonstrated
	using the dir copmmand. 

	The Common Vulnerabilities and Exposures project (cve.mitre.org) 
	has assigned the following name CAN-2005-0256 to this issue.


2. Vulnerable Supported Versions

	System				Binaries
	----------------------------------------------------------------------
	UnixWare 7.1.4 			/usr/sbin/in.ftpd
	UnixWare 7.1.3 			/usr/sbin/in.ftpd
	UnixWare 7.1.1 			/usr/sbin/in.ftpd


3. Solution

	The proper solution is to install the latest packages.

4. UnixWare 7.1.4

	4.1 Location of Fixed Binaries

	ftp://ftp.sco.com/pub/updates/UnixWare/SCOSA-2005.28

	4.2 Verification

	MD5 (erg712855.714.pkg.Z) = e774fb3a1e9be5ad88f961b95362e25c  
	md5 is available for download from
		ftp://ftp.sco.com/pub/security/tools

	4.3 Installing Fixed Binaries

	Upgrade the affected binaries with the following sequence:

	Download erg712855.713.pkg.Z to the /var/spool/pkg directory

	# uncompress /var/spool/pkg/erg712855.713.pkg.Z
	# pkgadd -d /var/spool/pkg/erg712855.713.pkg


5. UnixWare 7.1.3

	5.1 Location of Fixed Binaries

	ftp://ftp.sco.com/pub/updates/UnixWare/SCOSA-2005.28

	5.2 Verification

	MD5 (erg712855.713.pkg.Z) = 60aeba73dbb57e4979c36e222340cdc6

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

	5.3 Installing Fixed Binaries

	Upgrade the affected binaries with the following sequence:

	Download erg712855.713.pkg.Z to the /var/spool/pkg directory

	# uncompress /var/spool/pkg/erg712855.713.pkg.Z
	# pkgadd -d /var/spool/pkg/erg712855.713.pkg


6. UnixWare 7.1.1

	6.1 Location of Fixed Binaries

	ftp://ftp.sco.com/pub/updates/UnixWare/SCOSA-2005.28

	6.2 Verification

	MD5 (erg712855.711.pkg.Z) = c7dd29c7fb98756a9c8e5fa0eff5e177

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

	6.3 Installing Fixed Binaries

	Upgrade the affected binaries with the following sequence:

	Download erg712855.711.pkg.Z to the /var/spool/pkg directory

	# uncompress /var/spool/pkg/erg712855.711.pkg.Z
	# pkgadd -d /var/spool/pkg/erg712855.711.pkg


7. References

	Specific references for this advisory:
		http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0256 
		http://www.idefense.com/application/poi/display?id=207&type=vulnerabilities

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

	SCO security advisories via email
		http://www.sco.com/support/forums/security.html

	This security fix closes SCO incidents sr893935 fz532336
	erg712855.


8. 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.


9. Acknowledgments

	SCO would like to thank Adam Zabrocki

______________________________________________________________________________

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