14 DAY TRIAL // Canonical published details about the Munin vulnerabilities in its Ubuntu 13.10, Ubuntu 12.10, and Ubuntu 12.04 LTS operating systems.
According to the company, several security issues have been fixed in Munin.
It has been discovered that Munin incorrectly handled certain multigraph service names. A remote attacker could use this issue to cause Munin to stop data collection, resulting in a denial of service.
Also, Munin incorrectly handled certain multigraph data. A remote attacker could use this issue to cause Munin to consume resources, resulting in a denial of service.
For a more detailed description of the problems, you can see Canonical's security notification.
The flaws can be fixed if you upgrade your system(s) to the latest Munin package specific to each distribution. To apply the patch, run the Update Manager application.
In general, a standard system update will make all the necessary changes and you will have to restart the system.