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.
It is possible for a reseller to exploit a vulnerability in getpkginfo to open any file on the server, regardless of ownership which could ultimately lead to a root compromise. There is also a directory traversal present.
We have deemed this vulnerability to be rated as HIGH due to the fact that root access can be obtained.
This vulnerability was tested against cPanel 11.40.0 #19 and is believed to exist in all versions prior to the fixed builds below.
This vulnerability was patched in cPanel 22.214.171.124, 126.96.36.199, 188.8.131.52 & 184.108.40.206.
Vendor Contact Timeline:
2013-12-19: Vendor contacted via email.
2013-12-20: Vendor confirms vulnerability but claims they found it. We "politely" disagree.
2013-12-21: Vendor issues updates to all builds.
2013-12-24: Rack911 issues security advisory.