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______________________________________________________________________________

      SCO Security Advisory

Subject:    OpenServer 5.0.6 OpenServer 5.0.7 : cscope local attacker can remove arbitrary files
Advisory number:   SCOSA-2005.11
Issue date:     2005 April 7
Cross reference:  sr892180 fz530504 erg712739 CAN-2004-0996
______________________________________________________________________________


1. Problem Description

  cscope is a developer's tool for browsing source code.

  cscope creates temporary files with an easily predictable
  file name. A local attacker could exploit this vulnerability
  and possibly gain elevated privileges on the system. 

  The Common Vulnerabilities and Exposures project (cve.mitre.org)
  has assigned the name CAN-2004-0996 to this issue.


2. Vulnerable Supported Versions

  System        Binaries
  ----------------------------------------------------------------------
  OpenServer 5.0.6     /usr/ccs/bin/cscope
  OpenServer 5.0.7    /usr/ccs/bin/cscope 

3. Solution

  The proper solution is to install the latest packages.

4. OpenServer 5.0.6

  4.1 Location of Fixed Binaries

  ftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2005.11

  4.2 Verification

  MD5 (VOL.000.000) = 1fb21699e2a86a2aeb390a57219ff567

  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:

  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

  ftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2005.11

  5.2 Verification

  MD5 (VOL.000.000) = 1fb21699e2a86a2aeb390a57219ff567

  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:

  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.


6. References

  Specific references for this advisory:
    http://xforce.iss.net/xforce/xfdb/18125 
    http://www.securityfocus.com/bid/11697 
    http://marc.theaimsgroup.com/?l=bugtraq&m=110133485519690&w=2 
    http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0996

  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 sr892180 fz530504
  erg712739.


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 Gangstuck / Psirac <research@rexotec.com>
  who disclosed this vulnerability. Jeremy Bae from STG
  Security Inc <swbae@stgsecurity.com> also disclosed this
  vulnerability to the vendor.

______________________________________________________________________________

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