Yes, check this thread:

https://www-secure.symantec.com/connect/forums/0da...

Here is the Symantec Security Response blog posts in regards to it:

http://www.symantec.com/connect/blogs/java-zero-da...

https://www-secure.symantec.com/connect/blogs/addi...

So as long as your defs are up to date, you are protected.

check these links

http://www.symantec.com/business/support//index?page=content&id=TECH201601

https://www-secure.symantec.com/connect/blogs/java-zero-day-dished-cool-exploit-kit

https://www-secure.symantec.com/connect/blogs/additional-protection-recent-java-zero-day

Hello,

Java Zero-Day Exploit (CVE-2013-0422) 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

You may also like to check this Latest Symantec Article on the same issue -

Java Zero-Day Exploit (CVE-2013-0422)

http://www.symantec.com/docs/TECH201601

and these Latest Symantec BLOG's

Java Zero-Day Dished Up from Cool Exploit Kit

http://www.symantec.com/connect/blogs/java-zero-day-dished-cool-exploit-kit

Additional Protection for Recent Java Zero-Day

http://www.symantec.com/connect/blogs/additional-protection-recent-java-zero-day

On January 13, 2012, Oracle has released the patch found on -

http://www.oracle.com/technetwork/java/javase/downloads/index.html

and

Symantec strongly urges all users of Java to download and install this patch as soon as possible.

Oracle has also provided a blog for further details on the vulnerability.

https://blogs.oracle.com/security/entry/security_alert_for_cve_2013

I am sure the above information would assist you to Answer your question.