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AUSCERT External Security Bulletin Redistribution
ESB-2008.0752 -- [Win][UNIX/Linux]
Drupal core - Session fixation
31 July 2008
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AusCERT Security Bulletin Summary
---------------------------------
Product: Drupal 5.8 and prior
Publisher: Drupal
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Impact: Inappropriate Access
Access: Remote/Unauthenticated
Ref: ESB-2008.0686
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- ------------SA-2008-046 - DRUPAL CORE - SESSION FIXATION------------
* Advisory ID: DRUPAL-SA-2008-046
* Project: Drupal core
* Version: 5.x
* Date: 2008-July-23
* Security risk: Less critical
* Exploitable from: Remote
* Vulnerability: Session fixation
- ------------DESCRIPTION------------
When contributed modules such as Workflow NG terminate the current request
during a login event, user module is not able to regenerate the user's session.
This may lead to a session fixation attack [
http://en.wikipedia.org/wiki/Session_fixation ], when a malicious user is able
to control another users' initial session ID. As the session is not regenerated,
the malicious user may use the 'fixed' session ID after the victim authenticates
and will have the same access.
The advisory SA-2008-044 [ http://drupal.org/node/280571 ] claims that this
session fixation vulnerability was fixed in Drupal 5.8 and 6.3. Unfortunately,
Drupal 5.8 still contains this vulnerability.
- ------------VERSIONS AFFECTED------------
* Drupal 5.x before version 5.9
- ------------SOLUTION------------
Install the latest version:
* If you are running Drupal 5.x then upgrade to Drupal 5.9 [
http://ftp.drupal.org/files/projects/drupal-5.9.tar.gz ].
If you are unable to upgrade immediately, you can apply a patch to secure your
installation until you are able to do a proper upgrade. The patches fix security
vulnerabilities, but do not contain other fixes which were released in these
versions.
* To patch Drupal 5.8 use SA-2008-046-5.8.patch [
http://drupal.org/files/sa-2008-046/SA-2008-046-5.8.patch ].
- ------------REPORTED BY------------
* The session fixation issue was originally reported by Erich C. Beyrent. Its
continued existance in 5.8 was reported by dmnd [ http://drupal.org/user/329415
].
- ------------CONTACT------------
The security contact for Drupal can be reached at security at drupal.org or via
the form at [ http://drupal.org/contact ].
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