Sami Koivu's blog post from 2009 describes an information leak in the java.io.FilePermission class. Patch name specified as a constructor argument is transformed to a canonical path internally. Hash code of this canonical path is exposed via FilePermission's hashCode() method. Sandboxed code could possibly use this flaw to get information about file system paths (such as JVM current directory - user.dir, or user's home directory). Blog post also describes that this issued can be used to check existence of files or directories on system with case insensitive file systems (such as Windows). http://slightlyrandombrokenthoughts.blogspot.com/2009/12/filepermission-class-leaks-sensitive.html
This issue has been addressed in following products: Red Hat Enterprise Linux 6 Via RHSA-2012:1386 https://rhn.redhat.com/errata/RHSA-2012-1386.html
This issue has been addressed in following products: Red Hat Enterprise Linux 5 Via RHSA-2012:1385 https://rhn.redhat.com/errata/RHSA-2012-1385.html
This issue has been addressed in following products: Red Hat Enterprise Linux 6 Via RHSA-2012:1384 https://rhn.redhat.com/errata/RHSA-2012-1384.html
Fix included in IcedTea6 versions 1.10.10 and 1.11.5: http://mail.openjdk.java.net/pipermail/distro-pkg-dev/2012-October/020556.html http://icedtea.classpath.org/hg/release/icedtea6-1.11/file/d9564350faa6/patches/security/20121016/6631398.patch Fix included in IcedTea7 versions 2.1.3, 2.2.3 and 2.3.3: http://mail.openjdk.java.net/pipermail/distro-pkg-dev/2012-October/020571.html http://icedtea.classpath.org/hg/release/icedtea7-forest-2.3/jdk/rev/cb996986a525
This issue has been addressed in following products: Supplementary for Red Hat Enterprise Linux 6 Via RHSA-2012:1391 https://rhn.redhat.com/errata/RHSA-2012-1391.html
This issue has been addressed in following products: Supplementary for Red Hat Enterprise Linux 5 Supplementary for Red Hat Enterprise Linux 6 Via RHSA-2012:1392 https://rhn.redhat.com/errata/RHSA-2012-1392.html
This issue has been addressed in following products: Supplementary for Red Hat Enterprise Linux 6 Via RHSA-2012:1467 https://rhn.redhat.com/errata/RHSA-2012-1467.html
This issue has been addressed in following products: Supplementary for Red Hat Enterprise Linux 6 Supplementary for Red Hat Enterprise Linux 5 Via RHSA-2012:1465 https://rhn.redhat.com/errata/RHSA-2012-1465.html
This issue has been addressed in following products: Supplementary for Red Hat Enterprise Linux 6 Supplementary for Red Hat Enterprise Linux 5 Via RHSA-2012:1466 https://rhn.redhat.com/errata/RHSA-2012-1466.html
This issue has been addressed in following products: Supplementary for Red Hat Enterprise Linux 5 Via RHSA-2012:1485 https://rhn.redhat.com/errata/RHSA-2012-1485.html
This issue has been addressed in following products: Red Hat Network Satellite Server v 5.5 Via RHSA-2013:1456 https://rhn.redhat.com/errata/RHSA-2013-1456.html
This issue has been addressed in following products: Red Hat Network Satellite Server v 5.4 Via RHSA-2013:1455 https://rhn.redhat.com/errata/RHSA-2013-1455.html