[HACKATTACK Advisory #3]Social Impress CMS 1.1 - Session Fixation
Details
Product: Impress CMS
Security-Risk: moderated
Remote-Exploit: yes
Vendor-URL: http://www.impresscms.info
Vendor-Status: informed
Advisory-Status: not yet published
Credits
Discovered by: David Vieira-Kurz
http://www.HACKATTACK.at || http://www.HACKATTACK.eu
Impress CMS 1.1 and prior
Original Advisory:
Introduction
SocialEngine is a PHP-based Content Management System.
More Details
The cookie variable "PHPSESSID" parameter can be set to a malicious and arbitrary value.
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.
Workaround:
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;
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