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===============================================================================
Security Advisory                                                       CERT-NL
===============================================================================
Author/Source : N.P. de Koo                                 Index  :    S-96-12
Distribution  : World                                       Page   :          1
Classification: External                                    Version:          1
Subject       : Java Implementations Can Allow Connections 
                to an Arbitrary Host                        Date   :  06-Mar-96
===============================================================================

By courtesy of CERT Coordination Center we received the following information.

CERT Coordination Center advisory CA-96.05 reports a vulnerability 
in Netscape Navigator 2.0 Java implementation and in Release
1.0 of the Java Developer's Kit from Sun Microsystems, Inc.   

This vulnerability allows that Java applets can connect to arbitrary hosts on 
the Internet, including those presumed to be previously inaccessible, such as 
hosts behind a firewall.

This advisory provides information on patches to be obtained from
   http://home.netscape.com/newsref/std/java_security.html 
for the Netscape part. Sun will release a patch soon.

CERT-NL recommends, until you install the patch, disabling Java using the 
"Security Preferences" dialog box.

Additional information with regards to this vulnerability is placed in 
the README file associated with the advisory. You are encouraged to check 
on README file updates regularly. You can automate that process by using 
the CERT-NL notifier service. 

All CERT Coordination Center advisories and README's are mirrored by CERT-NL.
The specific URL's for this case are:

> ftp://ftp.surfnet.nl/surfnet/net-security/cert-cc-mirror/cert_advisories/CA-96.05.java_applet_security_mgr    
> ftp://ftp.surfnet.nl/surfnet/net-security/cert-cc-mirror/cert_advisories/CA-96.05.README

More information about the CERT-NL mirror and notifier services is 
contained in News items N-95-01 (notifier) and N-95-02 (CERT mirror), 
both present on ftp://ftp.surfnet.nl/surfnet/net-security/cert-nl/docs/news/

==============================================================================

CERT-NL is the Computer Emergency Response Team for SURFnet customers. 
SURFnet is the Dutch network for educational, research and related institutes.
CERT-NL is a member of the Forum of Incident Response and Security Teams 
(FIRST). 

All CERT-NL material is available under:
  http://www.surfnet.nl/surfnet/security/cert-nl.html
  ftp://ftp.surfnet.nl/surfnet/net-security 
  
In case of computer or network security problems please contact your 
local CERT/security-team or CERT-NL  (if your institute is NOT a SURFnet 
customer please address the appropriate (local) CERT/security-team).

CERT-NL is one/two hour(s) ahead of UTC (GMT) in winter/summer,
i.e. UTC+0100 in winter and UTC+0200 in summer (DST).
   Email:     cert-nl@surfnet.nl
   Phone:     +31 302 305 305
   Fax:       +31 302 305 329
   Snailmail: SURFnet bv
              Attn. CERT-NL
              P.O. Box 19035
              NL - 3501 DA  UTRECHT
              The Netherlands
   A 7 * 24 hours phone number is available to SURFnet SSC's and FIRST
   members on request.
==============================================================================


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