Buffer Overflow Vulnerabilities in the Java Runtime Environment (JRE) with Processing Image Files and Fonts may Allow Privileges to be Escalated

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Buffer overflow vulnerabilities in the Java Runtime Environment (JRE) with processing image files and fonts may allow privileges to be escalated:

1. Impact

CR 6804996:
A buffer overflow vulnerability in the Java Runtime Environment with processing PNG images may allow an untrusted Java Web Start application to escalate privileges. For example, an untrusted application may grant itself permissions to read and write local files or execute local applications that are accessible to the user running the untrusted application.

CR 6804997:
A buffer overflow vulnerability in the Java Runtime Environment with processing GIF images may allow an untrusted Java Web Start application to escalate privileges. For example, an untrusted application may grant itself permissions to read and write local files or execute local applications that are accessible to the user running the untrusted application.

CR 6804998:
A buffer overflow vulnerability in the Java Runtime Environment with processing GIF images may allow an untrusted applet or Java Web Start application to escalate privileges. For example, an untrusted applet may grant itself permissions to read and write local files or execute local applications that are accessible to the user running the untrusted applet.

CR 6804999:
A buffer overflow vulnerability in the Java Runtime Environment with processing fonts may allow an untrusted applet or Java Web Start application to escalate privileges. For example, an untrusted applet may grant itself permissions to read and write local files or execute local applications that are accessible to the user running the untrusted applet.

Sun acknowledges with thanks, "regenrecht" working with iDefense VCP (http://labs.idefense.com/vcp/) for bringing the issues described in CRs 6804996, 6804997, and 6804998 to our attention.

Sun acknowledges with thanks, Sean Larsson working with iDefense VCP (http://labs.idefense.com/vcp/) for bringing the issue described in CR 6804999 to our attention.

2. Contributing Factors

The issues described in CR 6804996 and CR 6804997 can occur in the following Java SE and Java SE for Business releases for Windows, Solaris, and Linux:

• JDK and JRE 6 Update 12 and earlier

Note: JDK and JRE 5.0, SDK and JRE 1.4.2 and 1.3.1 are not affected.

The issue described in CR 6804998 can occur in the following Java SE and Java SE for Business releases for Windows, Solaris, and Linux:

• JDK and JRE 6 Update 12 and earlier
• JDK and JRE 5.0 Update 17 and earlier

and in the following Java SE for Business release for Windows, Solaris, and Linux:

• SDK and JRE 1.4.2_19 and earlier

and in the following Java SE release for Windows and Solaris:

• SDK and JRE 1.3.1_24 and earlier

The issue described in CR 6804999 can occur in the following Java SE and Java SE for Business releases for Windows, Solaris, and Linux:

• JDK and JRE 6 Update 12 and earlier
• JDK and JRE 5.0 Update 17 and earlier
  

Note: SDK and JRE 1.4.2 and 1.3.1 are not affected by this issue.

To determine the default version of the JRE that Internet Explorer uses, visit the URL:

• http://java.com/en/download/installed.jsp?detect=jre&try=1

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:

    Java(TM) Plug-in SE 6 U11

In this example, the version of the JRE that the browser uses is SE 6 U11.

3. Symptoms

There are no reliable symptoms that would indicate the described issues have been exploited.

4. Workaround

There are no workarounds for these issues.  Please see the Resolution section below.

5. Resolution

CR 6804996 and CR 6804997 are addressed in the following Java SE and Java SE for Business releases for Windows, Solaris, and Linux:

• JDK and JRE 6 Update 13 or later

CR 6804998 is addressed in the following Java SE and Java SE for Business releases for Windows, Solaris, and Linux:

• JDK and JRE 6 Update 13 or later
• JDK and JRE 5.0 Update 18 or later

and in the following Java SE for Business release for Windows, Solaris, and Linux:

• SDK and JRE 1.4.2_20 or later

and in the following Java SE release for Windows and Solaris:

• SDK and JRE 1.3.1_25 or later

CR 6804999 is addressed in the following Java SE and Java SE for Business releases for Windows, Solaris, and Linux:

• JDK and JRE 6 Update 13 or later
• JDK and JRE 5.0 Update 18 or later

Java SE releases are available at:

JDK and JRE 6 Update 13:

• http://java.sun.com/javase/downloads/index.jsp

JRE 6 Update 13:

• http://java.com/
• Through the Java Update tool for Microsoft Windows users

JDK 6 Update 13 for Solaris is available in the following patches:

• Java SE 6: update 13 (as delivered in patch 125136-14)
• Java SE 6: update 13 (as delivered in patch 125137-14 (64bit))
• Java SE 6_x86: update 13 (as delivered in patch 125138-14)
• Java SE 6_x86: update 13 (as delivered in patch 125139-14 (64bit))

JDK and JRE 5.0 Update 18:

• http://java.sun.com/javase/downloads/index_jdk5.jsp

JDK 5.0 Update 18 for Solaris is available in the following patches:

• J2SE 5.0: update 18 (as delivered in patch 118666-19)
• J2SE 5.0: update 18 (as delivered in patch 118667-19 (64bit))
• J2SE 5.0_x86: update 18 (as delivered in patch 118668-19)
• J2SE 5.0_x86: update 18 (as delivered in patch 118669-19 (64bit))
  

Java SE for Business releases are available at:

• http://www.sun.com/software/javaseforbusiness/getit_download.jsp

Note 1:  Java SE releases SDK and JRE 1.4.2 have completed the Sun End of Service Life (EOSL) process. Sun recommends that users upgrade to the latest Java SE release. Customers interested in continuing to receive critical fixes on SDK and JRE 1.4.2 are encouraged to migrate to Java SE for Business.

Note 2:  SDK and JRE 1.3.1 has completed the Sun End of Service Life (EOSL) 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 Java SE release.

Note 3: 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://www.java.com/en/download/help/5000010800.xml

For more information on Security Sun Alerts, see Technical Instruction ID 213557.

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.

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