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TITLE:
Sun Java JRE GIF Image Processing Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA23757

VERIFY ADVISORY:
http://secunia.com/advisories/23757/

CRITICAL:
Highly critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
Sun Java JRE 1.5.x / 5.x
http://secunia.com/product/4228/
Sun Java JRE 1.3.x
http://secunia.com/product/87/
Sun Java JRE 1.4.x
http://secunia.com/product/784/
Sun Java SDK 1.3.x
http://secunia.com/product/1660/
Sun Java SDK 1.4.x
http://secunia.com/product/1661/
Sun Java JDK 1.5.x
http://secunia.com/product/4621/

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.

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.

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

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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