Security Advisory for Apache Struts 2

Number: AV17-098
Date: 11 July 2017


The purpose of this advisory is to bring attention to a security bulletin regarding a vulnerability in Apache Struts 2.3.x with Struts 1 plugin.


Apache has released a security bulletin outlining the possibility to perform a remote code execution attack in Apache Struts 2.3.x with the Struts 1 plugin by using a malicious field containing a Struts 1 action.

CVE Reference: CVE-2017-9791

Suggested Action

CCIRC recommends that system administrators refer to the linked security bulletin where Apache outlines a solution to avoid exploitation of this vulnerability.


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

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