Ubuntu has released a security notice for exim4 today. That affects these versions:
This vulnerability is for an issue in exim where it could be made to run programs as an administrator. This was because Exim did not properly deallocate memory when processing certain command line arguments. Local attackers could use that along with other vulnerabilities that could possibly allow arbitrary code to be executed and could allow administrative privileges.
You will want to ensure that you update that package using the ‘apt-get upgrade exim4’ command or that it is updated to one of these packages:
Ubuntu 16.04 LTS:
Ubuntu 14.04 LTS:
More information on that can be found here as well:
Chris June 19th, 2017
Posted In: News
Whmcs has released a patch for the 4.x and 5.x versions of their software today that fix some security issues. They are not releasing the details of the security issue as of yet, but it is highly recommended that you apply the patches as soon as possible. You can find more about it at their blog.
Chris March 12th, 2013
Posted In: Security