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USN-2593-1: Dnsmasq vulnerability

4 May 2015

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

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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.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 15.04
Ubuntu 14.10
Ubuntu 14.04
Ubuntu 12.04

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

References

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Further reading