Permissions, Privileges, and Access Controls in phpMyAdmin - CVE-2016-9849
Published: December 11, 2016 / Updated: August 4, 2020
Vulnerability identifier: #VU33348
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2016-9849
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
An issue was discovered in phpMyAdmin. It is possible to bypass AllowRoot restriction ($cfg['Servers'][$i]['AllowRoot']) and deny rules for username by using Null Byte in the username. All 4.6.x versions (prior to 4.6.5), 4.4.x versions (prior to 4.4.15.9), and 4.0.x versions (prior to 4.0.10.18) are affected.
Affected software
phpMyAdmin
phpmyadmin (Alpine package)
phpmyadmin (Alpine package)
How to mitigate CVE-2016-9849
Install update from vendor's website.
phpmyadmin (Alpine package) - update to 4.4.15.9-r0