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______________________________________________________________________________
SCO Security Advisory
Subject: OpenServer 5.0.6 OpenServer 5.0.7 : nwprint privilege
escalation
Advisory number: SCOSA-2005.26
Issue date: 2005 May 25
Cross reference: sr893493 fz531721 erg712826 CAN-2005-0993
______________________________________________________________________________
1. Problem Description
Buffer overflow in nwprint allows local users to execute
arbitrary code via a long command line argument.
The Common Vulnerabilities and Exposures project (cve.mitre.org)
has assigned the name CAN-2005-0993 to this issue.
2. Vulnerable Supported Versions
System Binaries
----------------------------------------------------------------------
OpenServer 5.0.6 /usr/lib/nucrt/bin/nwprint
/usr/lib/nucrt/bin/nwlpstat
/etc/nwcleand
/usr/lib/nucrt/bin/nwcancel
/usr/lib/nucrt/bin/nwlpadmin
OpenServer 5.0.7 See the Maintenance Pack 3 Release Notes
3. Solution
The proper solution is to install the latest packages.
4. OpenServer 5.0.6
4.1 First install oss646c or later
4.2 Location of oss646c
ftp://ftp.sco.com/pub/openserver5/oss646c/
4.3 Verification of oss646c
MD5 (VOL.000.000) = f19b6c6949f615316bfb075d249989e8
MD5 (VOL.000.001) = 341ff8553aecd2c7b0c2beaf83030d0f
MD5 (VOL.000.002) = 6e46708ad8029e12280d4f9ac60ab814
MD5 (VOL.000.003) = 2868b64a6a6db742adb3b485be645d7e
MD5 (VOL.000.004) = 1696fe1db9bb063827ee5e76e58dff84
MD5 (VOL.000.005) = f39da342f8af72fcaccdf478dca04109
MD5 (VOL.000.006) = 2b31611c8af7d2e7910d6e8e3cf701a6
MD5 (VOL.000.007) = d0175c0f4e3ed29435b1eab95609f8f4
MD5 (VOL.000.008) = aa9e8a525c341fed077f981b1dacb486
MD5 (VOL.000.009) = 8e023af67b57507824406bdda322079a
MD5 (VOL.000.010) = 2b46e8adba8ae0b64109f2069da978a2
4.4 Location of Fixed Binaries
ftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2005.26
4.5 Verification
MD5 (VOL.000.000) = 83798688f4e5ac7f9e8c9602df8fa575
md5 is available for download from
ftp://ftp.sco.com/pub/security/tools
4.6 Installing Fixed Binaries
Upgrade the affected binaries with the following sequence:
1) Download the VOL* files to a directory
2) Run the custom command, specify an install from media
images, and specify the directory as the location of the
images.
5. OpenServer 5.0.7
5.1 Location of Fixed Binaries
Maintenance Pack 3
http://www.sco.com/support/update/download/osr507list.html
5.2 Verification
MD5 (507mp3_vol.tar) = c927aefdd50b50aca5d29e08c1562aec
md5 is available for download from
ftp://ftp.sco.com/pub/security/tools
5.3 Installing Fixed Binaries
See the Maintenance Pack 3 Release Notes
ftp://ftp.sco.com/pub/openserver5/507/mp/mp3/osr507mp3.html
or
ftp://ftp.sco.com/pub/openserver5/507/mp/mp3/osr507mp3.txt
6. References
Specific references for this advisory:
http://lists.seifried.org/pipermail/security/2005-April/007678.html
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0993
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 sr893493 fz531721
erg712826.
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. Acknowledgments
SCO would like to thank pasquale minervini
______________________________________________________________________________
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