Note: This is an archival copy of Security Sun Alert 200041 as previously published on http://sunsolve.sun.com. Latest version of this security advisory is available from http://support.oracle.com as Sun Alert 1000033.1. |
Category Security Release Phase Resolved 6569621, 6609269 Product Java 2 Platform, Standard Edition Date of Workaround Release 03-OCT-2007 Date of Resolved Release 05-Sep-2008 Security Vulnerabilities in Java Runtime Environment May Allow Network Access Restrictions to be Circumvented 1. Impact [1] A vulnerability in the Java Runtime Environment (JRE) may allow malicious Javascript code that is downloaded by a browser from a malicious website to make network connections, through Java APIs, to network services on machines other than the one that the Javascript code was downloaded from. This may allow network resources (such as web pages) and vulnerabilities (that exist on these network services) which are not otherwise normally accessible to be accessed or exploited. [2] A second vulnerability in the JRE may allow an untrusted applet that is downloaded from a malicious website through a web proxy to make network connections to network services on machines other than the one that the applet was downloaded from. This may allow network resources (such as web pages) and vulnerabilities (that exist on these network services) which are not otherwise normally accessible to be accessed or exploited. Both issues are reported in the following publication: http://crypto.stanford.edu/dns/ and the second issue is also reported at: http://seclists.org/fulldisclosure/2007/Jul/0159.html Sun acknowledges with thanks, Dan Boneh, Collin Jackson, Adam Barth, Andrew Bortz, Weidong Shao, and David Byrne for bringing these issues to our attention. 2. Contributing Factors The first issue can occur in the following releases (for Windows, Solaris, and Linux running the Firefox and Opera browsers):
Note: This issue does not affect the Internet Explorer browser. The second issue can occur in the following releases (for Windows, Solaris, and Linux):
To determine the default version of the JRE that Internet Explorer uses:
To determine the default version of the JRE that Mozilla or Firefox browsers use, visit the URL "about:plugins". The browser will display a page called "Installed plug-ins" which lists the version of the Java Plug-in such as the following: Java(TM) Plug-in 1.5.0_11-b03 This above example indicates that the version of the JRE that the browser uses is 1.5.0_11. 3. Symptoms There are no predictable symptoms that would indicate that the above issues have been exploited. 4. Workaround Several options to mitigate the risk of these vulnerabilities are documented in the Stanford DNS Rebinding paper referenced above. The options include modifying browsers, configuring DNS servers and firewalls. More details are available in the paper at the URL above (please see the Impact Statement). 5. Resolution Sun has included changes that perform additional hostname matching using DNS reverse mapping data to mitigate these issues. We are working with industry partners to more fully address these issues and will include additional improvements in later update releases. [1] Mitigations for the first issue are included in the following releases (for Windows, Solaris and Linux):
and are included in the following release (for Windows and Solaris 8):
[2] Migitations for the second issue are included in the following releases (for Windows, Solaris, and Linux):
and are included in later releases of SDK and JRE 1.4.2 and 1.3.1. JDK and JRE 6 Update 3 is available for download at: http://java.sun.com/javase/downloads/index.jsp JDK 6 Update 3 for Solaris is available in the following patches:
JDK and JRE 5.0 Update 13 is available for download at: http://java.sun.com/javase/downloads/index_jdk5.jsp JDK 5.0 Update 13 for Solaris is available in the following patches:
SDK and JRE 1.4.2_16 is available for download at: http://java.sun.com/j2se/1.4.2/download.html SDK and JRE 1.3.1 for Solaris 8 is available for download at: http://java.sun.com/j2se/1.3/download.html SDK and JRE 1.3.1 has completed the Sun End of Life (EOL) process and is only supported for customers with Solaris 8 and Vintage Support Offering support contracts (see http://java.sun.com/j2se/1.3/download.html). Sun strongly recommends that users upgrade to the latest releases. Note: When installing a new version of the product from a source other than a Solaris patch, it is recommended that the old affected versions be removed from your system. To remove old affected versions on the Windows platform, please see: http://java.com/en/download/help/uninstall_java.xml For more information on Security Sun Alerts, see 1009886.1.This Sun Alert notification is being provided to you on an "AS IS" basis. This Sun Alert notification may contain information provided by third parties. The issues described in this Sun Alert notification may or may not impact your system(s). Sun makes no representations, warranties, or guarantees as to the information contained herein. ANY AND ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE HEREBY DISCLAIMED. BY ACCESSING THIS DOCUMENT YOU ACKNOWLEDGE THAT SUN SHALL IN NO EVENT BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES THAT ARISE OUT OF YOUR USE OR FAILURE TO USE THE INFORMATION CONTAINED HEREIN. This Sun Alert notification contains Sun proprietary and confidential information. It is being provided to you pursuant to the provisions of your agreement to purchase services from Sun, or, if you do not have such an agreement, the Sun.com Terms of Use. This Sun Alert notification may only be used for the purposes contemplated by these agreements. Copyright 2000-2008 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, CA 95054 U.S.A. All rights reserved. Modification History 09-Oct-2007: Updated Resolution section 22-Oct-2007: Updated Resolution section 05-Sep-2008: No further updates, republish as Resolved References125136-04125137-04 125138-04 125139-04 118666-14 118667-14 118668-14 118669-14 Attachments This solution has no attachment |
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