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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2007.0421 -- [UNIX/Linux] Apache MyFaces Tomahawk JSF Framework Cross-Site Scripting (XSS) Vulnerability 15 June 2007 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Apache MyFaces Tomahawk JSF Publisher: iDEFENSE Operating System: UNIX variants (UNIX, Linux, OSX) Windows Impact: Cross-site Scripting Access: Remote/Unauthenticated CVE Names: CVE-2007-3101 Original Bulletin: http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=544 - --------------------------BEGIN INCLUDED TEXT-------------------- Apache MyFaces Tomahawk JSF Framework Cross-Site Scripting (XSS) Vulnerability iDefense Security Advisory 06.14.07 http://labs.idefense.com/intelligence/vulnerabilities/ Jun 14, 2007 I. BACKGROUND Java Server Faces, JSF, is a framework used to create server side GUI Web applications. It is comparable to the Java Struts framework. Apache MyFaces Tomahawk is an open source implementation of JSF. The Tomahawk version contains Apache extensions to the base specification. More information is available at the following URL. http://myfaces.apache.org/ II. DESCRIPTION Remote exploitation of an input validation vulnerability in Apache Software Foundation's MyFaces Tomahawk JSF framework could allow an attacker to perform a cross-site scripting (XSS) attack. The code responsible for parsing HTTP requests is vulnerable to an XSS vulnerability. When parsing the 'autoscroll' parameter from a POST or GET request, the value of this variable is directly inserted into JavaScript that is sent back to the client. This allows an attacker to run arbitrary JavaScript in the context of the affected domain of the MyFaces application being targeted. III. ANALYSIS Successful exploitation of this vulnerability allows an attacker to conduct an XSS attack on a user. This could allow an attacker to steal cookies, inject content into pages, or submit requests using the user's credentials. To exploit this vulnerability, an attacker must use social engineering techniques to persuade the user to click a link to a Web application that uses MyFaces Tomahawk. In the following example, the [javascript] portion of the request would be present unfiltered in the returned content. http://www.vulnerable.tld/some_app.jsf?autoscroll=[javascript] IV. DETECTION iDefense has confirmed the existence of this vulnerability in MyFaces Tomahawk version 1.1.5. Previous versions may also be affected. V. WORKAROUND iDefense is currently unaware of any workaround for this issue. VI. VENDOR RESPONSE The Apache Software Foundation MyFaces team has addressed this vulnerability by releasing version 1.1.6 of MyFaces Tomahawk. More information can be found at the following URL. http://issues.apache.org/jira/secure/ReleaseNote.jspa?version=12312536&styleName=Text&projectId=12310272 VII. CVE INFORMATION The Common Vulnerabilities and Exposures (CVE) project has assigned the name CVE-2007-3101 to this issue. This is a candidate for inclusion in the CVE list (http://cve.mitre.org/), which standardizes names for security problems. VIII. DISCLOSURE TIMELINE 06/05/2007 Initial vendor notification 06/05/2007 Initial vendor response 06/14/2007 Coordinated public disclosure IX. CREDIT This vulnerability was reported to iDefense by Rajat Swarup of VeriSign Global Security Consulting. Get paid for vulnerability research http://labs.idefense.com/methodology/vulnerability/vcp.php Free tools, research and upcoming events http://labs.idefense.com/ X. LEGAL NOTICES Copyright © 2007 iDefense, Inc. Permission is granted for the redistribution of this alert electronically. It may not be edited in any way without the express written consent of iDefense. If you wish to reprint the whole or any part of this alert in any other medium other than electronically, please e-mail customerservice@idefense.com for permission. Disclaimer: The information in the advisory is believed to be accurate at the time of publishing based on currently available information. Use of the information constitutes acceptance for use in an AS IS condition. There are no warranties with regard to this information. Neither the author nor the publisher accepts any liability for any direct, indirect, or consequential loss or damage arising from use of, or reliance on, this information. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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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 If you believe that your computer system has been compromised or attacked in any way, we encourage you to let us know by completing the secure National IT Incident Reporting Form at: http://www.auscert.org.au/render.html?it=3192 =========================================================================== 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). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQCVAwUBRnIBhyh9+71yA2DNAQJXzgP/X1iTBRX5+E1l8ajuV40WElRg2BytwmT8 F4FaAVUeFgPUjD3S1MZzAZK938rWOgapk7R/1jnz34s90PY3RXCFleQdIUJri8g+ DGQZDXD7QNP5aVcrDJ+P2Dr6q2W60u+A8Ibv1yUmCzvI3hY81lj0gCCoct4vRAER 1aM0u8FJpsc= =LUEW -----END PGP SIGNATURE-----