Google’s Security Research Team Identifies and Fixes 7 Vulnerabilities in Dnsmasq

Haythem Elmir
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Regardless of what you may think of Google as a company, it is difficult to criticize their prolific and in-depth security research. The latest example is their disclosure of seven distinct issues in the Dnsmasq software package.

From the authors’ website, “Dnsmasq provides network infrastructure for small networks: DNS, DHCP, router advertisement and network boot.” In practice, the Dnsmasq code has been widely leveraged in routers, firewalls, IoT devices, virtualization frameworks and even mobile devices when you need to set up a portable hotspot. In other words, there is a lot of Dnsmasq code “in the wild” and bugs in this code could be a big deal depending on the nature of the vulnerabilities.

Of the seven issues identified by Google, three allow for Remote Command Execution, three are Denial of Service vulnerabilities, and one could result in “Information Leakage.”

Google has been working internally and with the Dnsmasq team to fix these issues. The project’s git repository has been updated with the appropriate patches, Dnsmasq v2.78 includes the patches and the October Google security patch update includes fixes for the Dnsmasq vulnerabilities. In addition, from the Google Security Blog, “Kubernetes versions 1.5.8, 1.6.11, 1.7.7 and 1.8.0 have been released with a patched DNS pod. Other affected Google services have been updated.”

 

To read the original article:

http://securityaffairs.co/wordpress/63763/breaking-news/dnsmasq-vulnerabilities.html

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