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AUSCERT External Security Bulletin Redistribution
ESB-2008.0686 -- [Win][UNIX/Linux]
Drupal - Multiple vulnerabilities in core and third party module
10 July 2008
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AusCERT Security Bulletin Summary
---------------------------------
Product: Druapl Core
OpenID (third party module)
Publisher: Drupal
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Impact: Execute Arbitrary Code/Commands
Cross-site Scripting
Cross-site Request Forgery
Provide Misleading Information
Access: Remote/Unauthenticated
Original Bulletin: http://drupal.org/node/280571
http://drupal.org/node/280592
Comment: This advisory contains two (2) drupal advisories.
- --------------------------BEGIN INCLUDED TEXT--------------------
- ------------SA-2008-044 - DRUPAL CORE - MULTIPLE VULNERABILITIES------------
* Advisory ID: DRUPAL-SA-2008-044
* Project: Drupal core
* Version: 5x, 6.x
* Date: 2008-July-9
* Security risk: Moderately critical
* Exploitable from: Remote
* Vulnerability: Multiple vulnerabilities
- ------------DESCRIPTION------------
Multiple vulnerabities and weaknesses were discovered in Drupal. Neither of
these are readily exploitable.
CROSS SITE SCRIPTING
Free tagging taxonomy terms can be used to insert arbitrary script and HTML
code (cross site scripting [ http://en.wikipedia.org/wiki/Cross-site_scripting ]
or XSS) on node preview pages. A successful exploit requires that the victim
selects a term containing script code and chooses to preview the node. This
issue affects Drupal 6.x only.
Some values from OpenID [ http://openid.net/what/ ] providers are output
without being properly escaped, allowing malicious providers to insert arbitrary
script and HTML code (XSS) into user pages. This issue affects Drupal 6.x only.
filter_xss_admin() has been hardened to prevent use of the object HTML tag in
administrator input.
CROSS SITE REQUEST FORGERIES
Translated strings (5.x, 6.x) and OpenID identities (6.x) are immediately
deleted upon accessing a properly formatted URL, making such deletion vulnerable
to cross site request forgeries [
http://en.wikipedia.org/wiki/Cross-site_request_forgery ] (CSRF). This may lead
to unintended deletion of translated strings or OpenID identities when a
sufficiently privileged user visits a page or site created by a malicious
person.
SESSION FIXATION
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. This issue affects both Drupal 5 and Drupal 6.
SQL INJECTION
Schema API uses an inappropriate placeholder for 'numeric' fields enabling SQL
injection [ http://en.wikipedia.org/wiki/SQL_injection ] when user-supplied data
is used for such fields.This issue affects Drupal 6 only.
- ------------VERSIONS AFFECTED------------
* Drupal 5.x before version 5.8
* Drupal 6.x before version 6.3
- ------------SOLUTION------------
Install the latest version:
* If you are running Drupal 5.x then upgrade to Drupal 5.8 [
http://ftp.drupal.org/files/projects/drupal-5.8.tar.gz ].
* If you are running Drupal 6.x then upgrade to Drupal 6.3 [
http://ftp.drupal.org/files/projects/drupal-6.3.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 5.7 use SA-2008-044-5.7.patch [
http://drupal.org/files/sa-2008-044/SA-2008-044-5.7.patch ].
* To patch Drupal 6.2 use SA-2008-044-6.2.patch [
http://drupal.org/files/sa-2008-044/SA-2008-044-6.2.patch ].
- ------------NOTE FOR SITE ADMINISTRATORS------------
Drupal 5.8 and 6.3 no longer support the use of the object HTML tag in many
text supplied by administrators. Such texts include the mission statement and
taxonomy term descriptions.
- ------------NOTES FOR DEVELOPERS------------
Drupal 6.3 has the new db_query placeholder %n for numeric fields (DECIMAL,
NUMERIC). Custom queries should be updated to reflect this change.
- ------------REPORTED BY------------
* The session fixation issue was reported by Erich C. Beyrent.
* The Taxonomy term XSS issue was reported by John Morahan [
http://drupal.org/user/58170 ].
* The OpenID CSRF issue was reported by Peter Wolanin [
http://drupal.org/user/49851 ] (Drupal security team).
* The OpenID XSS issue was reported by Neil Drumm [
http://drupal.org/user/3064 ] (Drupal security team).
* The locale CSRF issue and the numeric SQL injection issue were reported by
Heine Deelstra [ http://drupal.org/user/17943 ] (Drupal security team).
- ------------CONTACT------------
The security contact for Drupal can be reached at security at drupal.org or via
the form at [ http://drupal.org/contact ].
- ------------SA-2008-045 - OPENID - MULTIPLE VULNERABILITIES------------
* Advisory ID: DRUPAL-SA-2008-045
* Project: OpenID (third-party module)
* Version: 5.x
* Date: 2008-July-9
* Security risk: Less critical
* Exploitable from: Remote
* Vulnerability: Cross site scripting, Cross site request forgeries
- ------------DESCRIPTION------------
The OpenID module for Drupal 5.x allows uses to create an account or log into a
Drupal site using one or more OpenID identities. Find out more about OpenID at
[ http://openid.net ].
Two vulnerabilities and weaknesses were discovered in the contributed OpenID
module.
CROSS SITE SCRIPTING
Some information sent from the OpenID provider is not escaped before it is
displayed.
Wikipedia has more information about cross site scripting [
http://en.wikipedia.org/wiki/Xss ] (XSS).
CROSS SITE REQUEST FORGERIES
The Drupal Forms API protects against Cross Site Request Forgeries (CSRF),
where a malicious site can cause a user to unintentionally take actions on
another site where they are authenticated. The OpenID module allowed OpenID
identities to be deleted simply by clicking a link. Thus, a user could have all
of their identities removed and no longer be able to log in with OpenID .
- ------------VERSIONS AFFECTED------------
* OpenID for Drupal 5.x before version 5x.-1.2
Drupal 5.x core is not affected. If you do not use the contributed OpenID
module for Drupal 5.x, there is nothing you need to do.
- ------------SOLUTION------------
Install the latest version:
* If you currently use OpenID 5.x-1.0 or 5.x-1.1 upgrade to OpenID 5.x-1.2 [
http://drupal.org/node/280593 ]
See also the OpenID project page [ http://drupal.org/project/openid ].
- ------------REPORTED BY------------
* Neil Drumm (drumm [ http://drupal.org/user/3064 ]) of the Drupal Security
Team
* Peter Wolanin (pwolanin [ http://drupal.org/user/49851 ]) of the Drupal
Security Team
- ------------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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