Oracle Java Zero-Day Vulnerability

Number: AL13-001
Date: 11 January 2013


The purpose of this Alert is to raise awareness of a vulnerability in Java 7 Update 10 and earlier versions that could allow unauthenticated remote code execution.


CCIRC is aware of an Oracle Java vulnerability affecting Oracle Java 7 Update 10 and earlier versions. The vulnerability allows a remote attacker to run arbitrary code which is currently being exploited in the wild.

There is currently no patch available from the vendor.

CVE Reference: CVE-2013-0422

Suggested action

CCIRC recommends that organizations review and test the following workaround in the context of their network environment prior to deployment to help mitigate the associated risk:

Note: Since version 7 update 10 of Java, it is possible to prevent the execution of Java applications in navigation software from the Java control panel using the "Adjusting the level of Java client safety" (See references below).


Note to Readers

In support of Public Safety's mission to build a safe and resilient Canada, CCIRC's mandate is to help ensure the security and resilience of the vital non-federal government cyber systems that underpin Canada's national security, public safety and economic prosperity. As Canada's computer security incident response team, CCIRC is Canada's national coordination centre for the prevention and mitigation of, preparedness for, response to, and recovery from cyber incidents on non-federal government systems. It does this by providing authoritative advice and support, and coordinating information sharing and incident response.

Please note, CCIRC PGP key has recently been updated.

For general information, please contact Public Safety Canada's Public Affairs division at:

Telephone: 613-944-4875 or 1-800-830-3118
Fax: 613-998-9589

Date modified: