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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2012.0395 TYPO3-CORE-SA-2012-002: Cross-Site Scripting Vulnerability in TYPO3 Core 20 April 2012 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: TYPO3 Publisher: TYPO3 Operating System: UNIX variants (UNIX, Linux, OSX) Windows Impact/Access: Cross-site Scripting -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2012-2112 Original Bulletin: https://typo3.org/teams/security/security-bulletins/typo3-core/typo3-core-sa-2012-002/ - --------------------------BEGIN INCLUDED TEXT-------------------- TYPO3-CORE-SA-2012-002: Cross-Site Scripting Vulnerability in TYPO3 Core April 17, 2012 Category: TYPO3 Core Author: Helmut Hummel Keywords: TYPO3-CORE-SA-2012-002, Cross-Site Scripting It has been discovered that TYPO3 Core is vulnerable to Cross-Site Scripting. Component Type: TYPO3 Core Affected Versions: 4.4.0 up to 4.4.14, 4.5.0 up to 4.5.14, 4.6.0 up to 4.6.7 and development releases of the 4.7 branch. Vulnerable subcomponent: Exception Handler Vulnerability Type: Cross-Site Scripting Severity: Medium Suggested CVSS v2.0: AV:N/AC:L/Au:N/C:P/I:P/A:N/E:F/RL:OF/RC:C (What's that?) Problem Description: Failing to properly encode the output, the default TYPO3 Exception Handler is susceptible to Cross-Site Scripting. We are not aware of a possibilty to exploit this vulnerability without third party extensions being installed that put user input in exception messages. However it has come to our attention that extensions using the extbase MVC framework can be used to exploit this vulnerability if these extensions accept objects in controller actions. In general and especially when in doubt if the above conditions are met, we highly recommend users of affected versions to update as soon as possible. Imortant Note: In case you have configured your own exception handler for TYPO3 you need to make sure that the exception messages are properly encoded within this exception handler before they are presented. Solution: Update to the TYPO3 versions 4.4.15, 4.5.15 or 4.6.8 that fix the problem described! Credits: Credits go to Security Team Member Helmut Hummel who discovered and reported the issue. General Advice: Follow the recommendations that are given in the TYPO3 Security Guide. Please subscribe to the typo3-announce mailing list. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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