-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1



______________________________________________________________________________

      SCO Security Advisory

Subject:    UnixWare 7.1.4 UnixWare 7.1.3 UnixWare 7.1.1 : CDE dtlogin unspecified double free
Advisory number:   SCOSA-2005.18
Issue date:     2005 April 7
Cross reference:  sr890079 fz529303 erg712592 CAN-2004-0368 CERT VU#179804
______________________________________________________________________________


1. Problem Description

  The Common Desktop Environment (CDE) dtlogin utility is
  used to log into a CDE session. The CDE dtlogin utility has
  a double-free vulnerability in the X Display Manager Control
  Protocol (XDMCP). By sending a specially-crafted XDMCP
  packet to a vulnerable system, a remote attacker could
  obtain sensitive information, cause a denial of service or
  execute arbitrary code on the system. 

  CERT Vulnerability Note VU#179804, Common Desktop Environment 
  (CDE) dtlogin improperly deallocates memory at 
  http://www.kb.cert.org/vuls/id/179804. 

  The Common Vulnerabilities and Exposures project (cve.mitre.org) 
  has assigned the name CAN-2004-0368 to this issue.


2. Vulnerable Supported Versions

  System        Binaries
  ----------------------------------------------------------------------
  UnixWare 7.1.4       /usr/dt/bin/dtgreet
          /usr/dt/bin/dtlogin
          /usr/dt/lib/libDtLogin.so.1

  UnixWare 7.1.3       /usr/dt/bin/dtgreet
          /usr/dt/bin/dtlogin
          /usr/dt/lib/libDtLogin.so.1

  UnixWare 7.1.1       See Maintenance Pack 5 notes
        
      
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-2005.18

  4.2 Verification

  MD5 (erg712592.pkg.Z) = d3714b22a624db25740f5539c063d407

  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 erg712592.pkg.Z to the /var/spool/pkg directory

  # uncompress /var/spool/pkg/erg712592.pkg.Z
  # pkgadd -d /var/spool/pkg/erg712592.pkg


5. UnixWare 7.1.3

  5.1 Location of Fixed Binaries

  ftp://ftp.sco.com/pub/updates/UnixWare/SCOSA-2005.18


  5.2 Verification

  MD5 (erg712592.713.pkg.Z) = fc8d0c4f0ebdcf65504d1b4985c7ba52

  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 erg712592.713.pkg.Z to the /var/spool/pkg directory

  # uncompress /var/spool/pkg/erg712592.713.pkg.Z
  # pkgadd -d /var/spool/pkg/erg712592.713.pkg


6. UnixWare 7.1.1 uw711mp5

  6.1 Location of Fixed Binaries

  The fixes are available in SCO UnixWare Release 7.1.1
        Maintenance Pack 5 or later.  See

        ftp://ftp.sco.com/pub/unixware7/uw711pk/uw711mp5.txt
        and
        ftp://ftp.sco.com/pub/unixware7/uw711pk/uw711mp5_errata.txt

  6.2 Verification

  MD5 (uw711mp5.cpio.Z) = 50bd66b7d57b2025da9dca4010d0ab1a

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

  6.3 Installing Fixed Binaries

  See uw711mp5.txt and uw711mp5_errata.txt for install instructions.


7. References

  Specific references for this advisory:
    http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0368

  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 sr890079 fz529303
  erg712592.


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 Dave Aitel

______________________________________________________________________________

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.1 (SCO/SYSV)

iD8DBQFCVYa9aqoBO7ipriERAiKPAJ9tygBRSAMRNqWS2jRKE5PWyJF4+gCff8Em
Hvk5XLjwEg89hCPj96JJ1MM=
=dRsT
-----END PGP SIGNATURE-----