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Sun Java JRE GIF Image Processing Buffer Overflow Vulnerability Advisory Available in Danish  Advisory Available in German 

Secunia Advisory: SA23757  
Release Date: 2007-01-17
Last Update: 2007-01-18

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

Software:Sun Java JDK 1.5.x
Sun Java JRE 1.3.x
Sun Java JRE 1.4.x
Sun Java JRE 1.5.x / 5.x
Sun Java SDK 1.3.x
Sun Java SDK 1.4.x

CVE reference:CVE-2007-0243 (Secunia mirror)
CVE-2007-0234 (Secunia mirror)

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Description:
A vulnerability has been reported in Sun Java Runtime Environment (JRE), which can be exploited by malicious people to compromise a vulnerable system.

The vulnerability is caused due to an error when processing GIF images and can be exploited to cause a heap-based buffer overflow via a specially crafted GIF image with an image width of 0.

Successful exploitation allows execution of arbitrary code.

The vulnerability is reported in the following versions:
* JDK and JRE 5.0 Update 9 and prior.
* SDK and JRE 1.4.2_12 and prior.
* SDK and JRE 1.3.1_18 and prior.

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:
Updated to fixed versions.

JDK and JRE 5.0:
Update to JDK and JRE 5.0 Update 10 or later.
http://java.sun.com/javase/downloads/index_jdk5.jsp

SDK and JRE 1.4.x:
Update to SDK and JRE 1.4.2_13 or later.
http://java.sun.com/j2se/1.4.2/download.html

SDK and JRE 1.3.x:
Update to SDK and JRE 1.3.1_19 or later.
http://java.sun.com/j2se/1.3/download.html

Provided and/or discovered by:
Discovered by an anonymous person and reported via ZDI.

Changelog:
2007-01-18: Added CVE reference and link to US-CERT.

Original Advisory:
Sun Microsystems:
http://sunsolve.sun.com/search/document.do?assetkey=1-26-102760-1

ZDI:
http://www.zerodayinitiative.com/advisories/ZDI-07-005.html

Other References:
US-CERT VU#388289:
http://www.kb.cert.org/vuls/id/388289



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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