Using javatm



Keywords: using javatm
Description: The full internal version number for this update release is 1.6.0_22-b04 (where "b" means "build"). The external version number is 6u22. Added new Entrust Root CA-G2 and

The full internal version number for this update release is 1.6.0_22-b04 (where "b" means "build"). The external version number is 6u22.

Added new Entrust Root CA-G2 and updated Entrust.net CA (2048) root certificates. (Refer to 6959911 .)

The fix for CVE-2010-3560 could cause certain Java applets running in the new Java Plug-in to stop working if they are embedded in web pages which contain JavaScript that calls into Java in order to perform actions which require network security permissions. These applets may fail with a network security exception under some circumstances if the name service which resolved the original web page URL host name does not return a matching name as the result of a reverse address lookup. This is most likely to occur for the new Java Plug-in running on Solaris and Linux when configured to use NIS for host to network address resolution with maps containing host names which are in short form (rather than as a fully qualified domain name).

If an applet is suspected of failing due to this change you can verify that by setting the logging level of the Java Console to 5 and looking for logging strings beginning with "socket access restriction" which will describe the specific cause of the mismatch and will help in identifying the correct workaround to use as described below:

  • Add a new host name forward map entry (in /etc/hosts, NIS, or DNS) in a special form which is recognized by Java for the purpose of validating IPv4 and IPv6 name service mappings.
  • The IPv4 general name form followed by an /etc/hosts file fragment example for IP address 10.11.12.13 is:

There is an equivalent form for IPv6 addresses which uses the IP6.ARPA domain root format defined in RFC 3596.

  • Pre-pend a fully qualified host name before other mappings to the same address. For example, in /etc/hosts format:

    As an alternative to updating name service records, it may be possible to safely modify the applet to perform the network action using only it's own permissions independent of the web page which contains it by using the doPrivileged() method of the java.security.AccessController class.






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