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
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 version 1.0.1g:
Affected platforms and patch availability:
Note to Readers
The Canadian Cyber Incident Response Centre (CCIRC) operates within Public Safety Canada, and works with partners inside and outside Canada to mitigate cyber threats to vital networks outside the federal government. These include systems that keep Canada's critical infrastructure functioning properly, such as the electrical grid and financial networks, or contain valuable commercial information that underpins our economic prosperity. CCIRC supports the owners and operators of systems of national importance, including critical infrastructure, and is responsible for coordinating the national response to any serious cyber security incident.
For general information, please contact Public Safety Canada's Public Affairs division at:
Telephone: 613-944-4875 or 1-800-830-3118
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