Have a look at the information provided in following threads:
https://www-secure.symantec.com/connect/forums/0day-java-7-exploit-sep-ready-one
https://www-secure.symantec.com/connect/blogs/exploitation-java-vulnerabilities
https://www-secure.symantec.com/connect/blogs/additional-protection-recent-java-zero-day
https://www-secure.symantec.com/connect/blogs/java-zero-day-dished-cool-exploit-kit
Java Zero-Day Exploit (CVE-2013-0422)
http://www.symantec.com/docs/TECH201601
...this exploit is being detected by Symantec Intrusion Prevention.
Symantec has the following IPS signatures in place that specifically protect against the Cool Exploit Kit:
Web Attack: Cool Exploit Kit Website - www.symantec.com/security_response/attacksignatures/detail.jsp
Web Attack: Cool Exploit Kit PDF Download - www.symantec.com/security_response/attacksignatures/detail.jsp
Hope this answers your query.