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Sun Java Web Start JNLP File Processing Buffer Overflow Advisory Available in Danish  Advisory Available in German 

Secunia Advisory: SA25981  
Release Date: 2007-07-10
Last Update: 2007-07-11

Critical:
Highly critical
Impact: System access
Where: From remote
Solution Status: Vendor Patch

Software:Java Web Start 1.x
Sun Java JDK 1.5.x
Sun Java JDK 1.6.x
Sun Java JRE 1.5.x / 5.x
Sun Java JRE 1.6.x / 6.x

CVE reference:CVE-2007-3655 (Secunia mirror)

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Description:
A vulnerability has been reported in Sun Java Web Start, which can be exploited by malicious people to compromise a user's system.

The vulnerability is caused due to a boundary error within the Java Web Start component (javaws.exe) when processing JNLP files. This can be exploited to cause a stack-based buffer overflow via a specially crafted JNLP file with an overly long codebase attribute.

Successful exploitation allows execution of arbitrary code e.g. when a user visits a malicious website.

The vulnerability is reported in the following versions:
* JRE and JDK 6 Update 1 and earlier
* JRE and JDK 5 Update 11, and earlier

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

Solution:
Apply updates.

JRE/JDK 5 Update 12:
http://java.sun.com/javase/downloads/index_jdk5.jsp

JRE/JDK 6 Update 2:
http://java.sun.com/javase/downloads/index.jsp

Provided and/or discovered by:
Daniel Soeder, eEye Digital Security

The vendor also credits Brett Moore.

Changelog:
2007-07-11: Added CVE reference. Updated "Title", "Description" and "Solution". Added JDK as affected product.

Original Advisory:
Sun:
http://sunsolve.sun.com/search/document.do?assetkey=1-26-102996-1

eEye:
http://research.eeye.com/html/advisories/published/AD20070705.html

http://lists.grok.org.uk/pipermail/full-disclosure/2007-July/064552.html



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.

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