[Full-Disclosure] Security Update: [CSSA-2003-SCO.3] UnixWare 7.1.1 Open UNIX 8.0.0 UnixWare 7.1.3 : ftp vulnerability with pipe symbols in filenames

From: securityat_private
Date: Mon Mar 03 2003 - 15:22:09 PST

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______________________________________________________________________________

			SCO Security Advisory

Subject:		UnixWare 7.1.1 Open UNIX 8.0.0 UnixWare 7.1.3 : ftp vulnerability with pipe symbols in filenames
Advisory number: 	CSSA-2003-SCO.3
Issue date: 		2003 March 03
Cross reference:
______________________________________________________________________________


1. Problem Description

	By using a filename with a | (pipe symbol) in it, shell
	commands can be issued remotely on the machine of a user
	who is retrieving files with the FTP client program, from
	a compromised or malicious ftp server. This leads to a
	compromise of the client machine.


2. Vulnerable Supported Versions

	System				Binaries
	----------------------------------------------------------------------
	UnixWare 7.1.1 			/usr/bin/ftp
	Open UNIX 8.0.0 		/usr/bin/ftp
	UnixWare 7.1.3 			/usr/bin/ftp


3. Solution

	The proper solution is to install the latest packages.


4. UnixWare 7.1.1

	4.1 Location of Fixed Binaries

	ftp://ftp.sco.com/pub/updates/UnixWare/CSSA-2003-SCO.3


	4.2 Verification

	MD5 (erg712227.pkg.Z) = 296bbcf1394f7010397b8d90f9a9978d

	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 erg712227.pkg.Z to the /var/spool/pkg directory

	# uncompress /var/spool/pkg/erg712227.pkg.Z
	# pkgadd -d /var/spool/pkg/erg712227.pkg


5. Open UNIX 8.0.0

	5.1 Location of Fixed Binaries

	ftp://ftp.sco.com/pub/updates/UnixWare/CSSA-2003-SCO.3


	5.2 Verification

	MD5 (erg712227.pkg.Z) = 296bbcf1394f7010397b8d90f9a9978d

	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 erg712227.pkg.Z to the /var/spool/pkg directory

	# uncompress /var/spool/pkg/erg712227.pkg.Z
	# pkgadd -d /var/spool/pkg/erg712227.pkg


6. UnixWare 7.1.3

	6.1 Location of Fixed Binaries

	ftp://ftp.sco.com/pub/updates/UnixWare/CSSA-2003-SCO.3


	6.2 Verification

	MD5 (erg712227.pkg.Z) = 296bbcf1394f7010397b8d90f9a9978d

	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 erg712227.pkg.Z to the /var/spool/pkg directory

	# uncompress /var/spool/pkg/erg712227.pkg.Z
	# pkgadd -d /var/spool/pkg/erg712227.pkg


7. References

	Specific references for this advisory:

		http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0041

	SCO security resources:

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

	This security fix closes SCO incidents sr874929, fz527425,
	erg712227.


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. Acknowledgements

	This vulnerability was first published in 1997 on Bugtraq,
	and was discovered again by The Hackademy Audit team in
	September 2002 during a source code audit.

______________________________________________________________________________
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