[Full-Disclosure] Security Update: [CSSA-2003-SCO.1] UnixWare 7.1.1 Open UNIX 8.0.0 : command line argument buffer overflow in ps

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______________________________________________________________________________

			SCO Security Advisory

Subject:		UnixWare 7.1.1 Open UNIX 8.0.0 : command line argument buffer overflow in ps
Advisory number: 	CSSA-2003-SCO.1
Issue date: 		2003 January 10
Cross reference:
______________________________________________________________________________


1. Problem Description

	The ps command has a command line argument buffer overflow.
	Note that ps is not a setuid or setgid program, but instead it
	is authorized to use (and does use) the
	procprivl(SETPRV,pm_work(P_MACREAD) call.  Therefore, this
	vulnerability is exploitable, and could be used to run code of
	the attacker's choice with these elevated privileges.


2. Vulnerable Supported Versions

	System				Binaries
	----------------------------------------------------------------------
	UnixWare 7.1.1			/sbin/ps
					/usr/bin/ps

	Open UNIX 8.0.0			/sbin/ps
					/usr/bin/ps


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/OpenUNIX/CSSA-2003-SCO.1


	4.2 Verification

	MD5 (erg712109.pkg.Z) = 70777560bc1e0d55ceff89dfd8334c47

	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 erg712109.pkg.Z to the /var/spool/pkg directory

	# uncompress /var/spool/pkg/erg712109.pkg.Z
	# pkgadd -d /var/spool/pkg/erg712109.pkg


5. Open UNIX 8.0.0

	5.1 Location of Fixed Binaries

	ftp://ftp.sco.com/pub/updates/OpenUNIX/CSSA-2003-SCO.1


	5.2 Verification

	MD5 (erg712109.pkg.Z) = 70777560bc1e0d55ceff89dfd8334c47

	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 erg712109.pkg.Z to the /var/spool/pkg directory

	# uncompress /var/spool/pkg/erg712109.pkg.Z
	# pkgadd -d /var/spool/pkg/erg712109.pkg


6. References

	Specific references for this advisory:

		none

	SCO security resources:

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

	This security fix closes SCO incidents sr868388, fz525923,
	erg712109.


7. 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.


8. Acknowledgements

	 SCO Security discovered and researched this vulnerability.

______________________________________________________________________________

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