Security Services

Oracle Java Soundbank Heap Buffer Overflow Vulnerability



Java Runtime Environment (JRE) is a platform that supports the execution of programs that are developed using the Java programming language. It is available for multiple platforms, including Windows, Linux and MacOS. The JRE platform also supports Java Applets which can be loaded from Web pages. For more information, visit the link shown below.


Remote exploitation of a heap buffer overflow vulnerability in Oracle Corp.'s Java Runtime Environment (JRE) could allow an attacker to execute arbitrary code with the privileges of the current user.

During the processing of a Soundbank file, user-controlled data is parsed within certain resources. A pointer to a fixed sized heap buffer and a user-controlled length value are extracted from these resources. A certain function uses this length value in conjunction with a loop operation to perform indexing within the fixed sized buffer. A large length value may result in the fixed size buffer being overflown with user-controlled data. This condition can allow a remote attacker to subvert execution control and execute arbitrary code.


Exploitation of this vulnerability results in the execution of arbitrary code with the privileges of the current user. In order to exploit this vulnerability, a user must load a web page containing a specially crafted Java applet. An attacker typically accomplishes this via social engineering or injecting content into compromised, trusted sites. Typical social engineering attacks will pass URLs as part of instant messages or electronic mail.


Java SE is vulnerable. JDK and JRE 6 Update 25 and earlier, JDK 5.0 Update 29 and earlier and SDK 1.4.2_31 and earlier are vulnerable.


It is possible to disable the Java plugin in Internet Explorer, Firefox, Safari, Opera and Google Chrome.


Oracle Corp. has released a patch which addresses this issue. For more information, consult their advisory at the following URL. 39.html


The Common Vulnerabilities and Exposures (CVE) project has assigned the name CVE-2011-0802 to this issue. This is a candidate for inclusion in the CVE list (, which standardizes names for security problems.


12/15/2010 Initial Vendor Notification
12/15/2010 Initial Vendor Reply
06/08/2011 Coordinated Public Disclosure


This vulnerability was reported to iDefense by binaryproof.

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