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VULNERABILITIES - May 16, 2006

TITLE:
Sun Java JRE Large Temporary File Creation Vulnerability

SECUNIA ADVISORY ID:
SA20132

VERIFY ADVISORY:
http://secunia.com/advisories/20132/

CRITICAL:
Not critical

IMPACT:
DoS

WHERE:
From remote

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

DESCRIPTION:
Marc Schoenefeld has discovered a vulnerability in Sun Java JRE (Java
Runtime Environment), which can be exploited by malicious people to
cause a DoS (Denial of Service).

The vulnerability is caused due to missing restrictions on temporary
file creation. This can be exploited by a malicious applet to create
large files in the temporary folder via e.g. the "Font.createFont()"
method.

Successful exploitation causes a vulnerable system to run out of disk
space.

The vulnerability has been confirmed in JDK 5.0 Update 6 and has also
been reported in SDK 1.4.2_11 on the Microsoft Windows platform.

SOLUTION:
Remove files created by malicious applets in the temporary folder
"%temp%" when running out of disk space after an attack.

PROVIDED AND/OR DISCOVERED BY:
Marc Schoenefeld

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