[MajorSecurity Advisory #49]Calimero.CMS - Session fixation Issue
Product: Calimero.CMS
Affected version: 3.3.1232 and prior
Remote-Exploit: yes
Vendor-URL: http://www.calimero-cms.de
Vendor-Status: informed
Advisory-Status: published
Discovered by: David Vieira-Kurz
http://www.majorsecurity.de
http://www.majorsecurity.de/index_2.php?major_rls=major_rls49
"Calimero.CMS is a open source Content Management System"
1.1 Description:
In a session fixation attack, the attacker fixes the user's session ID before the user even logs into the target server.
After a user's session ID has been fixed, the attacker will wait for them to login.
Once the user does so, the attacker uses the predefined session ID value to assume their online identity.
2.Regenerate SID on each request.
if ( ! isset( $_SESSION['SERVER_GENERATED_SID'] ) ) {
session_destroy(); // destroy all data in session
}
session_regenerate_id(); // generate a new session identifier
$_SESSION['SERVER_GENERATED_SID'] = true;
28.05.2007 discovery of the vulnerability
30.05.2007 contacted the vendor
30.05.2007 working patch sent to the vendor
01.06.2007 advisory is written
01.06.2007 advisory released
MajorSecurity is a non-profit German penetration testing and security research project
which consists of only one person at the present time.
http://www.majorsecurity.de/