Comment # 5 on bug 994313 from Marcus Meissner

https://www.phpmyadmin.net/security/PMASA-2016-52/

PMASA-2016-52

Announcement-ID: PMASA-2016-52

Date: 2016-07-25
Summary

ArbitraryServerRegexp bypass
Description

A vulnerability was reported with the $cfg['ArbitraryServerRegexp']
configuration directive. An attacker could reuse certain cookie values in a way
of bypassing the servers defined by ArbitraryServerRegexp.
Severity

We consider this vulnerability to be critical.
Mitigation factor

Only servers using `$cfg['ArbitraryServerRegexp']` are vulnerable to this
attack.
Affected Versions

All 4.6.x versions (prior to 4.6.4), 4.4.x versions (prior to 4.4.15.8), and
4.0.x versions (prior to 4.0.10.17) are affected
Solution

Upgrade to phpMyAdmin 4.6.4, 4.4.15.8, 4.0.10.17, or newer or apply patch
listed below.
References

Thanks to Emanuel Bronshtein @e3amn2l for reporting this vulnerability.

Assigned CVE ids: CVE-2016-6629

CWE ids: CWE-661
Patches

The following commits have been made on the 4.6 branch to fix this issue:

    a97be3a

The following commits have been made on the 4.4 branch to fix this issue:

    cd682a6

The following commits have been made on the 4.0 branch to fix this issue:

    95b7b7d