Username deny rules bypass (AllowRoot & Others) by using Null Byte
It is possible to bypass AllowRoot restriction ($cfg['Servers'][$i]['AllowRoot']) and deny rules for username by using Null Byte in the username.
We consider this vulnerability to be severe.
All 4.6.x versions (prior to 4.6.5), 4.4.x versions (prior to 220.127.116.11), and 4.0.x versions (prior to 18.104.22.168) are affected.
Upgrade to phpMyAdmin 4.6.5, 22.214.171.124, 126.96.36.199, or newer or apply patch listed below.
Thanks to Emanuel Bronshtein @e3amn2l for reporting this vulnerability.
Assigned CVE ids: CVE-2016-9849
CWE ids: CWE-661
The following commits have been made on the 4.0 branch to fix this issue:
The following commits have been made on the 4.4 branch to fix this issue:
The following commits have been made on the 4.6 branch to fix this issue:
For further information and in case of questions, please contact the phpMyAdmin team. Our website is phpmyadmin.net.