Published: 18 June 2013
Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 Update 21 and earlier, 6 Update 45 and earlier, and 5.0 Update 45 and earlier, and OpenJDK 7, allows remote attackers to affect availability via unknown vectors related to Serialization. NOTE: the previous information is from the June 2013 CPU. Oracle has not commented on claims from another vendor that this issue is related to improper handling of circular references in ObjectStreamClass.
in lucid+, NetX and the plugin moved to the icedtea-web package
sun-java6 is not redistributable, no longer in the archive and no longer tracked sun-java5 is EOL upstream and no longer tracked as of 2013-06-19, upstream IcedTea updates are not available updates break the icedtea-web plugin and it will need this fix: http://mail.openjdk.java.net/pipermail/distro-pkg-dev/2013-June/023745.html