Type: Arbitrary File Access
Vulnerable Version: All versions prior to the fixed builds below.
Fixed Version: 188.8.131.52, 184.108.40.206, 220.127.116.11 & 18.104.22.168
cPanel is an easy-to-use control panel that gives web hosts and the website owners they serve, the ability to quickly and easily manage their servers and websites. Web Host Manager (WHM) is a part of the cPanel software, often used by resellers and system administrators.
A malicious reseller can manipulate named (BIND) to open any file on the server, including root owned files, with the possibility of being able to view sensitive data.
We have deemed this vulnerability to be rated as MEDIUM due to the fact that while any file can be accessed, the output is extremely limited making this exploit difficult to perform.
This vulnerability was tested against cPanel 22.214.171.124 and is believed to exist in all versions prior to the fixed builds below.
This vulnerability was patched in cPanel 126.96.36.199, 188.8.131.52, 184.108.40.206 & 220.127.116.11.
Vendor Contact Timeline:
2013-10-04: Vendor contacted via email.
2013-10-10: Vendor confirms vulnerability.
2013-12-16: Vendor issues updates to all builds.
2013-12-18: Rack911 issues security advisory.