1. Ubuntu Security Notices
  2. USN-2593-1

USN-2593-1: Dnsmasq vulnerability

Publication date

4 May 2015

Overview

Dnsmasq could be made to crash or expose sensitive information if it received specially crafted network traffic.

Releases

Packages

  • dnsmasq - Small caching DNS proxy and DHCP/TFTP server

Details

Nick Sampanis discovered that Dnsmasq incorrectly handled certain malformed
DNS requests. A remote attacker could use this issue to cause Dnsmasq to
crash, resulting in a denial of service, or possibly obtain sensitive
information.

Nick Sampanis discovered that Dnsmasq incorrectly handled certain malformed
DNS requests. A remote attacker could use this issue to cause Dnsmasq to
crash, resulting in a denial of service, or possibly obtain sensitive
information.

Update instructions

After a standard system update you need to reboot your computer to make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
15.04 vivid dnsmasq-base –  2.72-3ubuntu0.1
14.10 utopic dnsmasq-base –  2.71-1ubuntu0.1
14.04 trusty dnsmasq-base –  2.68-1ubuntu0.1
12.04 precise dnsmasq –  2.59-4ubuntu0.2
dnsmasq-base –  2.59-4ubuntu0.2
dnsmasq-utils –  2.59-4ubuntu0.2

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References

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