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[20090101] - Core - JSession SSL Session Disclosure

  • Project: Joomla!
  • SubProject: framework
  • Severity: Low
  • Versions: 1.5.8 and all previous 1.5 releases
  • Exploit type: Session Hijacking/
  • Reported Date: 2008-November-20
  • Fixed Date: 2009-January-9

Description

When running a site under SSL ONLY (the entire site is forced to be under ssl), Joomla! does not set the SSL flag on the cookie.  This can allow someone monitoring the network to find the cookie related to the session.  Please note that all data is still transferred securely.

Affected Installs

1.5.8 and lower installs which are run with SSL only (no non-ssl access).  

Solution

Upgrade to latest Joomla! version (1.5.9 or newer), and set force_ssl in global configuration. Alternatively, the php setting session.secure_cookie can be set in .htaccess or php.ini.  Joomla! (all versions) will respect this setting.

Contact

The JSST at the Joomla! Security Centre.

Reported By: Hanno Boeck