Describe CVE-2015-5501.
What is CVE-2015-5501?
The Hostmaster (Aegir) module 6.x-2.x before 6.x-2.4 and 7.x-3.x before 7.x-3.0-beta2 for Drupal allows remote attackers to execute arbitrary PHP code via a crafted file in the directory used to write Apache vhost files for hosted sites in a multi-site environment..