The Java Network Launching Protocol (JNLP) implementation in IcedTea6 1.9.x before 1.9.9 and before 1.8.9, and IcedTea-Web 1.1.x before 1.1.1 and before 1.0.4, allows remote attackers to trick victims into granting access to local files by modifying the content of the Java Web Start Security Warning dialog box to represent a different filename than the file for which access will be granted.
https://bugzilla.redhat.com/show_bug.cgi?id=718170
http://ubuntu.com/usn/usn-1178-1
http://securitytracker.com/id?1025854
http://rhn.redhat.com/errata/RHSA-2011-1100.html
http://mail.openjdk.java.net/pipermail/distro-pkg-dev/2011-July/015171.html
http://mail.openjdk.java.net/pipermail/distro-pkg-dev/2011-July/015170.html
http://icedtea.classpath.org/hg/release/icedtea-web-1.1/rev/512de5d90388
http://icedtea.classpath.org/hg/release/icedtea-web-1.0/rev/b99f9a9769e0