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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2010.0308 Oracle Java Runtime Environment Image FIle Buffer Overflow Vulnerability 31 March 2010 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Java Runtime Environment Publisher: iDEFENSE Operating System: Windows Linux variants Mac OS X Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction Resolution: Patch/Upgrade Original Bulletin: http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=865 - --------------------------BEGIN INCLUDED TEXT-------------------- iDefense Security Advisory 03.30.10 http://labs.idefense.com/intelligence/vulnerabilities/ Mar 30, 2010 I. BACKGROUND The Java Runtime Environment (JRE) is the Sun Microsystems implementation of the Java run-time. For more information, visit the link shown below. http://www.sun.com/java/ II. DESCRIPTION Remote exploitation of a buffer overflow vulnerability in Oracle Corp.'s (formerly Sun Microsystems Inc.) Java Runtime Environment (JRE) could allow an attacker to execute arbitrary code with the privileges of the current user. The JRE is a platform that supports the execution of programs that are developed using the Java programming language. It is available for multiple platforms, including Windows, Linux and MacOS. The JRE platform also supports Java Applets, which can be loaded from Web pages. During the processing of an image file, user-controlled data is trusted and can result in an undersized allocation of a heap buffer. A copy operation into the heap buffer can lead to a heap overflow condition within the JRE. This condition may allow a remote attacker to subvert execution control and execute arbitrary code. III. ANALYSIS Exploitation of this vulnerability results in the execution of arbitrary code with the privileges of the user viewing the Web page. To exploit this vulnerability, a targeted user must visit a website and load a malicious Java Applet created by an attacker. An attacker typically accomplishes this via social engineering or injecting content into a compromised, trusted site. IV. DETECTION iDefense has confirmed the existence of this vulnerability in version 1.6.0u17 of Java Runtime Environment. iDefense tested the exploitation of this vulnerability on Windows XP SP3 and Windows XP SP2. A full list of affected Oracle products can be found in the Oracle Java SE and Java for Business Critical Patch Update Advisory. V. WORKAROUND iDefense is currently unaware of any workarounds for this issue. VI. VENDOR RESPONSE Oracle Corp. has released a patch which addresses this issue. For more information, consult their advisory at the following URL. http://www.oracle.com/technology/deploy/security/critical-patch-updates/javacpumar2010.html VII. CVE INFORMATION A Mitre Corp. Common Vulnerabilities and Exposures (CVE) number has not been assigned yet. VIII. DISCLOSURE TIMELINE 12/15/2009 Initial Vendor Notification 12/16/2009 Initial Vendor Reply 03/30/2010 Coordinated Public Disclosure IX. CREDIT This vulnerability was reported to iDefense by regenrecht. 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 © 2010 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. 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 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 iD8DBQFLsvgk/iFOrG6YcBERAtR3AKDNc+tky+hARiXf7yZQRcgjo/8q+gCfQQEt +yUCssUIUn/NSKftwXNJdM8= =BppP -----END PGP SIGNATURE-----