‘Red Hat OpenJDK IcedTea6 ClassLoader Code Execution Vulnerability’


This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Java OpenJDK.’


‘The original article can be found at: http://www.zerodayinitiative.com/advisories/ZDI-11-014/


Vulnerable Systems:
 * Red Hat OpenJDK IcedTea

User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The flaw exists within the IcedTea.so component. When handling the an applet the process fails to properly restrict permission of code. It is possible to create and instantiate subclasses of ClassLoader. A remote attacker can exploit this vulnerability to execute arbitrary code under the context of the browser.

Patch Availability:
Red Hat has issued an update to correct this vulnerability.
More details can be found at:

CVE Information:

Disclosure Timeline:
2010-12-21 – Vulnerability reported to vendor
2011-01-18 – Coordinated public release of advisory’

Categories: UNIX