GNU dnsmasq Security Updates

Number: AV17-147
Date: 04 October 2017


The purpose of this advisory is to bring attention to multiple dnsmasq security updates.


GNU dnsmasq released security updates to address multiple vulnerabilities in dnsmasq. A remote user could exploit some of these vulnerabilities to take control of an affected system.

Versions Affected:

GNU dnsmasq 2.62 to 2.77

CVE References: CVE-2017-13704, CVE-2017-14491,CVE-2017-14492,CVE-2017-14493,CVE-2017-14494,CVE-2017-14495,CVE-2017-14496

Suggested Action

CCIRC recommends that system administrators test and deploy the vendor-released updates to affected applications accordingly.


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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