Launchpad.net

CVE 2009-2670

The audio system in Sun Java Runtime Environment (JRE) in JDK and JRE 6 before Update 15, and JDK and JRE 5.0 before Update 20, does not prevent access to java.lang.System properties by (1) untrusted applets and (2) Java Web Start applications, which allows context-dependent attackers to obtain sensitive information by reading these properties.

See the CVE page on Mitre.org for more details.