OpenSSL Vulnerability

Number: AV14-017
Date: 8 April 2014


The purpose of this advisory is to bring attention to a vulnerability in OpenSSL which can be used to expose private data to an attacker.


CCIRC is aware of a vulnerability in OpenSSL that could expose private data to a remote, unauthenticated attacker through an incorrect memory handling function in the TLS heartbeat extension. This could allow a remote attacker to decrypt secure traffic and expose credentials and secret keys. OpenSSL is a popular application commonly used in web browsing, emails and instant messaging to provide security and privacy.

CVE Reference: CVE-2014-0160
CVSS Score: 9.4

Affected versions: OpenSSL versions 1.0.1 through 1.0.1f

Suggested action

CCIRC recommends that system administrators test and deploy the vendor released updates to affected platforms accordingly. For clients unable to immediately upgrade can consider disabling OpenSSL Heartbeat support.


OpenSSL news:

OpenSSL version 1.0.1g:

Affected platforms and patch availability:


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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