[TYPO3-announce] TYPO3 Security Bulletin TYPO3-20080515-1: Multiple vulnerabilities in extension Frontend User Registration (sr_feuser_register)

[Henning Pingel]

Dear users of TYPO3,

It has been discovered that the extension Frontend User Registration
(sr_feuser_register) is susceptible to Cross Site Scripting (XSS)
attacks and allows Remote Command Execution.

==== Component Type ====
Third party extensions. These extensions are not part of the TYPO3
default installation.

==== Affected Versions ====
All versions (1.4.0, 1.6.0, 2.2.1 to 2.2.7, 2.3.0 to 2.3.6, 2.4.0, 2.5.0
to 2.5.9)

==== Vulnerability Type ====
Cross Site Scripting, Remote Code Execution

==== Severity ====
HIGH

==== Problem Description ====
Failing to filter user input the extension is susceptible to Cross Site
Scripting (XSS) making it possible to execute arbitrary JavaScript.
Remote Command Execution is also possible allowing the deletion of
arbitrary files on the webserver.

==== Solution ====
Updated versions are available from the TYPO3 extension manager.

Users of TYPO3 3.x have to upgrade to extension version 2.2.8 which is
also available at
<http://typo3.org/extensions/repository/view/sr_feuser_register/2.2.8/>

Users of TYPO3 4.x have to upgrade to extension version 2.5.10 which is
also available at
<http://typo3.org/extensions/repository/view/sr_feuser_register/2.5.10/>

==== General advice ====
Follow the recommendations that are given in the TYPO3 Security Cookbook
[1]. If you haven't subscribed to the typo3-announce mailing list [2]
yet, please do so to receive future Security Bulletins via E-mail. All
TYPO3 Security Bulletins are available on the Security Team pages on
typo3.org [3].

==== Credits ====
Credits go to Philipp Hoffmann, Martin Sonnek and Daniel Pötzinger, who
discovered the issues. Furthermore the TYPO3 Security Team wishes to
thank the extension author Franz Holzinger for fixing the issue.

Regards,
Henning Pingel
henning at typo3.org

[1]
<http://typo3.org/fileadmin/security-team/typo3_security_cookbook_v-0.5.pdf>
[2] <http://lists.netfielders.de/cgi-bin/mailman/listinfo/typo3-announce>
[3] <http://typo3.org/teams/security/security-bulletins/>

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