US-CERT has released Vulnerability Note VU#636312 to address a vulnerability in Oracle Java Runtime Environment (JRE) 1.7. This vulnerability may allow an attacker to execute arbitrary code on a vulnerable system.
US-CERT encourages users and administrators to review Vulnerability Note VU#636312. This advisory includes possible workarounds that help mitigate the risk against known attack vectors by disabling the Java plug-in.
Update: Oracle has released an out-of-band patch to address this vulnerability. US-CERT encourages users and administrators to review the Oracle Security Alert for CVE-2012-4681 and apply any necessary updates to help mitigate the risk.