__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN HTTP Header Injection Vulnerabilities in Adobe Flash Player [APSB06-18] November 16, 2006 18:00 GMT Number R-049 [REVISED 10 Jan 2007] [REVISED 13 Mar 2007] [REVISED 31 May 2007] [REVISED 15 June 2007] ______________________________________________________________________________ PROBLEM: These vulnerabilities would allow remote attackers to modify HTTP headers of client requests and conduct HTTP Request Splitting attacks. PLATFORM: Adobe Flash Player 9.x, 8.x, and 7.x Red Hat Desktop (v. 3, 4) Enterprise Linux AS, ES, WS (v. 2.1, v.3, v.4) Red Hat Linux Advanced Workstation 2.1 for the Itanium Processor Solaris 8, 9, 10 Operating Systems Mozilla v1.7 DAMAGE: These vulnerabilities would allow remote attackers to modify HTTP headers of client requests and conduct HTTP Request Splitting attacks. The flexibility of the attack varies depending on the type of web browser being used. SOLUTION: Apply current patches. ______________________________________________________________________________ VULNERABILITY The risk is LOW. These vulnerabilities would allow remote ASSESSMENT: attackers to modify HTTP headers of client requests and conduct HTTP Request Splitting attacks. The flexibility of the attack varies depending on the type of web browser being used. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/r-049.shtml ORIGINAL BULLETIN: http://www.adobe.com/support/security/bulletins/apsb06-18.html ADDITIONAL LINKS: Red Hat Security Advisory RHSA-2007:0009-3 http://rhn.redhat.com/errata/RHSA-2007-0009.html Red Hat Security Advisory RHSA-2007:0077-6 http://rhn.redhat.com/errata/RHSA-2007-0077.html Sun Alert ID: 102932 http://www.sunsolve.sun.com/search/document.do?assetkey=1-26-102932-1 Sun Alert ID: 102955 http://www.sunsolve.sun.com/search/document.do?assetkey=1-26-102955-1 CVE: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-5330 ______________________________________________________________________________ REVISION HISTORY: 01/10/2007 - added a link to Red Hat Security Advisory RHSA-2007:0009-3 for Red Hat Enterprise Linux Extras versions 3 and 4 03/13/2007 - revised R-049 to add a link to Red Hat Security Advisory RHSA-2007:0077-6 for Red Hat Desktop (v. 3, 4), Enterprise Linux AS, ES, WS (v. 2.1, v.3, v.4), and Red Hat Linux Advanced Workstation 2.1 for the Itanium Processor. 05/31/2007 - revised R-049 to add a link to Sun Alert ID: 102932 for Solaris 10 Operating System. 06/15/2007 - revised R-049 to add a link to Sun Alert ID: 102955 for Solaris 8, 9, 10 Operating Systems and Mozilla v1.7. [***** Start APSB06-18 *****] Security bulletin Update available for HTTP Header Injection Vulnerabilities in Adobe Flash Player Release date: November 14, 2006 Vulnerability identifier: APSB06-18 CVE number: CVE-2006-5330 Platform: All Platforms Summary Adobe has provided a Flash Player 9 update to resolve vulnerabilities in Flash Player. These vulnerabilities would allow remote attackers to modify HTTP headers of client requests and conduct HTTP Request Splitting attacks. Affected software versions Adobe Flash Player 9.x, 8.x, and 7.x. The custom-header addition feature was added starting with Adobe Flash Player 7, thus Flash Player 6 and earlier are not affected. To verify the Adobe Flash Player version number, access the About Flash Player page, or right-click on Flash content and select “About Macromedia Flash Player” from the menu. If you use multiple browsers, perform the check for each browser you have installed on your system. Solution Adobe recommends all users of Adobe Flash Player 9.0.20.0 and earlier versions upgrade to the newest version 9.0.28.0, by downloading it from the Player Download Center, or by using the auto-update mechanism within the product when prompted. For customers who cannot upgrade to Adobe Flash Player 9, Adobe is working on updates to previous versions that will resolve this issue. All documented security vulnerabilities and their solutions are distributed through the Adobe security notification service. You can sign up for the service by clicking here. Severity rating Adobe categorizes this as an important issue and recommends affected users upgrade to version 9.0.28.0. Details Adobe has provided an update to resolve vulnerabilities in Adobe Flash Player. These vulnerabilities would allow remote attackers to modify HTTP headers of client requests and conduct HTTP Request Splitting attacks. The flexibility of the attack varies depending on the type of web browser being used. Adobe disclaimer License agreement By using software of Adobe Systems Incorporated or its subsidiaries ("Adobe"); you agree to the following terms and conditions. If you do not agree with such terms and conditions; do not use the software. The terms of an end user license agreement accompanying a particular software file upon installation or download of the software shall supersede the terms presented below. The export and re-export of Adobe software products are controlled by the United States Export Administration Regulations and such software may not be exported or re-exported to Cuba; Iran; Iraq; Libya; North Korea; Sudan; or Syria or any country to which the United States embargoes goods. In addition; Adobe software may not be distributed to persons on the Table of Denial Orders; the Entity List; or the List of Specially Designated Nationals. By downloading or using an Adobe software product you are certifying that you are not a national of Cuba; Iran; Iraq; Libya; North Korea; Sudan; or Syria or any country to which the United States embargoes goods and that you are not a person on the Table of Denial Orders; the Entity List; or the List of Specially Designated Nationals. If the software is designed for use with an application software product (the "Host Application") published by Adobe; Adobe grants you a non-exclusive license to use such software with the Host Application only; provided you possess a valid license from Adobe for the Host Application. Except as set forth below; such software is licensed to you subject to the terms and conditions of the End User License Agreement from Adobe governing your use of the Host Application. DISCLAIMER OF WARRANTIES: YOU AGREE THAT ADOBE HAS MADE NO EXPRESS WARRANTIES TO YOU REGARDING THE SOFTWARE AND THAT THE SOFTWARE IS BEING PROVIDED TO YOU "AS IS" WITHOUT WARRANTY OF ANY KIND. ADOBE DISCLAIMS ALL WARRANTIES WITH REGARD TO THE SOFTWARE; EXPRESS OR IMPLIED; INCLUDING; WITHOUT LIMITATION; ANY IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE; MERCHANTABILITY; MERCHANTABLE QUALITY OR NONINFRINGEMENT OF THIRD PARTY RIGHTS. Some states or jurisdictions do not allow the exclusion of implied warranties; so the above limitations may not apply to you. LIMIT OF LIABILITY: IN NO EVENT WILL ADOBE BE LIABLE TO YOU FOR ANY LOSS OF USE; INTERRUPTION OF BUSINESS; OR ANY DIRECT; INDIRECT; SPECIAL; INCIDENTAL; OR CONSEQUENTIAL DAMAGES OF ANY KIND (INCLUDING LOST PROFITS) REGARDLESS OF THE FORM OF ACTION WHETHER IN CONTRACT; TORT (INCLUDING NEGLIGENCE); STRICT PRODUCT LIABILITY OR OTHERWISE; EVEN IF ADOBE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Some states or jurisdictions do not allow the exclusion or limitation of incidental or consequential damages; so the above limitation or exclusion may not apply to you. [***** End APSB06-18 *****] _______________________________________________________________________________ CIAC wishes to acknowledge the contributions of Adobe for the information contained in this bulletin. _______________________________________________________________________________ CIAC, the Computer Incident Advisory Capability, is the computer security incident response team for the U.S. Department of Energy (DOE) and the emergency backup response team for the National Institutes of Health (NIH). CIAC is located at the Lawrence Livermore National Laboratory in Livermore, California. CIAC is also a founding member of FIRST, the Forum of Incident Response and Security Teams, a global organization established to foster cooperation and coordination among computer security teams worldwide. CIAC services are available to DOE, DOE contractors, and the NIH. CIAC can be contacted at: Voice: +1 925-422-8193 (7x24) FAX: +1 925-423-8002 STU-III: +1 925-423-2604 E-mail: ciac@ciac.org Previous CIAC notices, anti-virus software, and other information are available from the CIAC Computer Security Archive. World Wide Web: http://www.ciac.org/ Anonymous FTP: ftp.ciac.org PLEASE NOTE: Many users outside of the DOE, ESnet, and NIH computing communities receive CIAC bulletins. If you are not part of these communities, please contact your agency's response team to report incidents. Your agency's team will coordinate with CIAC. The Forum of Incident Response and Security Teams (FIRST) is a world-wide organization. A list of FIRST member organizations and their constituencies can be obtained via WWW at http://www.first.org/. This document was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor the University of California nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial products, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation or favoring by the United States Government or the University of California. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or the University of California, and shall not be used for advertising or product endorsement purposes. LAST 10 CIAC BULLETINS ISSUED (Previous bulletins available from CIAC) R-039: Vulnerabilities in Client Service for NetWare R-040: Cumulative Security Update for Internet Explorer R-041: Vulnerability in Microsoft Agent R-042: Vulnerabilities in Macromedia Flash Player from Adobe R-043: Vulnerability in Workstation Service R-044: Vulnerability in Microsoft XML Core Services R-045: WinZip FileView ActiveX Control R-046: Elinks Security Update R-047: Citrix Advanced Access Control R-048: Citrix Access Gateway