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

______________________________________________________________________________

       SCO Security Advisory

Subject:    UnixWare 7.1.3 UnixWare 7.1.4 : Lynx NNTP Buffer Overflow Vulnerability
Advisory number:   SCOSA-2005.47
Issue date:     2005 November 08
Cross reference:  fz533159
       CVE-2005-3120
______________________________________________________________________________


1. Problem Description

   Ulf Harnhammar has reported a vulnerability in Lynx, which can
   be exploited by malicious people to compromise a user's system.

   The vulnerability is caused due to a boundary error in the
   "HTrjis()" function in the handling of article headers sent from
   NNTP (Network News Transfer Protocol) servers. This can be
   exploited to cause a stack-based buffer overflow by e.g.
   tricking a user into visiting a malicious web site which
   redirects to a malicious NNTP server via the "nntp:" URI
   handler.

   Successful exploitation allows execution of arbitrary code.

   The Common Vulnerabilities and Exposures project (cve.mitre.org)
   has assigned the name CVE-2005-3120 to this issue.


2. Vulnerable Supported Versions

   System        Binaries
   ----------------------------------------------------------------------
   UnixWare 7.1.3      /usr/gnu/bin/lynx
   UnixWare 7.1.4      /usr/gnu/bin/lynx


3. Solution

   The proper solution is to install the latest packages.


4. UnixWare 7.1.3

   4.1 Location of Fixed Binaries

   ftp://ftp.sco.com/pub/updates/UnixWare/SCOSA-2005.47


   4.2 Verification

   MD5 (p533159.image) = bc3fd8c36aea096b7ed75a2f27950b1e

   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 p533159.image to the /var/spool/pkg directory

   # pkgadd -d /var/spool/pkg/p533159.image


5. UnixWare 7.1.4

   5.1 Location of Fixed Binaries

   ftp://ftp.sco.com/pub/updates/UnixWare/SCOSA-2005.47


   5.2 Verification

   MD5 (p533159.image) = bc3fd8c36aea096b7ed75a2f27950b1e

   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 p533159.image to the /var/spool/pkg directory

   # pkgadd -d /var/spool/pkg/p533159.image


6. References

   Specific references for this advisory:
     http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3120
     http://lists.grok.org.uk/pipermail/full-disclosure/2005-October/038019.html
     http://securitytracker.com/id?1015065
     http://secunia.com/advisories/17216

   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 incident fz533159.


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 Ulf Harnhammar for reporting this
   vulnerability.

______________________________________________________________________________
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.2 (UnixWare)

iD8DBQFDcPYVaqoBO7ipriERAjoRAJ0U1Ik6iVjuCU2XFRAAiJ1k157D8gCeOXw6
+lnmbCl8lvRH/GYwLg2saLE=
=g4hZ
-----END PGP SIGNATURE-----