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Sun Java Runtime Environment External XML Entities Security Bypass Advisory Available in German 

Secunia Advisory: SA28746  
Release Date: 2008-02-01

Critical:
Less critical
Impact: Security Bypass
Where: From remote
Solution Status: Vendor Patch

Software:Sun Java JDK 1.6.x
Sun Java JRE 1.6.x / 6.x

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Description:
Sun has acknowledged a security issue in Sun Java Runtime Environment (JRE), which can be exploited by malicious people to bypass certain security restrictions.

The security issue is caused due to the JRE processing external XML entity references even though the "external general entities" property is set to FALSE. This can be exploited to e.g. access certain URLs or cause a DoS (Denial of Service) via malicious XML documents.

Successful exploitation requires that malicious XML data is processed within a trusted applet or Java Web Start application.

The security issue is reported in Sun JDK and JRE 6 Update 3 and earlier. Sun JDK and JRE 5.0, and SDK and JRE 1.4.x and 1.3.x are reportedly not affected.

Do you have this product installed on your home computer? Scan using the free Personal Software Inspector or Online Software Inspector. Check if a vulnerable version is installed on computers in your corporate network, scan using the Network Software Inspector.

Solution:
Update to JDK or JRE 6 Update 4 or later.
http://java.sun.com/javase/downloads/index.jsp

JDK 6 Update 4 for Solaris is also available in the following patches:
Java SE 6 update 4 (as delivered in patch 125136-05 or later)
Java SE 6 update 4 (as delivered in patch 125137-05 or later (64bit))
Java SE 6 x86 update 4 (as delivered in patch 125138-05 or later)
Java SE 6 x86 update 4 (as delivered in patch 125139-05 or later (64bit))

Provided and/or discovered by:
The vendor credits Chris Evans and Johannes Henkel, Google Security Team.

Original Advisory:
http://sunsolve.sun.com/search/document.do?assetkey=1-66-231246-1



Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.

Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.

7 Related Secunia Security Advisories

1. Sun JRE Applet Handling Vulnerability
2. Sun Java JRE Multiple Vulnerabilities
3. Sun Java JRE/JDK Processing of XSLT Stylesheets in XML Signatures Vulnerability
4. Java JRE/JDK JSSE DoS and Untrusted Applets Network Security Bypass
5. Sun Java Web Start JNLP File Processing Buffer Overflow
6. Sun JDK JavaDoc Cross-Site Scripting Vulnerability
7. Sun JDK and JRE ICC and BMP Parser Vulnerabilities


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If you have new information regarding this Secunia advisory or a product in our database, please send it to us using either our web form or email us at vuln@secunia.com.

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