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mfazliazran / burp-co2

Automatically exported from code.google.com/p/burp-co2
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java.lang.UnsupportedClassVersionError #3

Closed GoogleCodeExporter closed 9 years ago

GoogleCodeExporter commented 9 years ago 
What steps will reproduce the problem?
1. loading the burp-co2 in burp pro 1.5.21 using extender

What is the expected output? What do you see instead?
java.lang.UnsupportedClassVersionError: burp/BurpExtender : Unsupported 
major.minor version 51.0
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClassCond(Unknown Source)
    at java.lang.ClassLoader.defineClass(Unknown Source)
    at java.security.SecureClassLoader.defineClass(Unknown Source)
    at java.net.URLClassLoader.defineClass(Unknown Source)
    at java.net.URLClassLoader.access$000(Unknown Source)
    at java.net.URLClassLoader$1.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Unknown Source)
    at burp.e5b.a(Unknown Source)
    at burp.e5b.<init>(Unknown Source)
    at burp.gb.a(Unknown Source)
    at burp.au.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)

What version of the product are you using? On what operating system?
windows 7 64 
java version "1.6.0_31"
Java(TM) SE Runtime Environment (build 1.6.0_31-b05)
Java HotSpot(TM) 64-Bit Server VM (build 20.6-b01, mixed mode)
burp pro 1.5.21
Please provide any additional information below.

Original issue reported on code.google.com by talarg...@gmail.com on 24 Feb 2014 at 3:29

GoogleCodeExporter commented 9 years ago 
Is anyone else getting this error?  I can't seem to reproduce it.

Original comment by Jason.Gi...@gmail.com on 14 Mar 2014 at 4:18

GoogleCodeExporter commented 9 years ago 
I get this error on Kali using Burp Pro v1.6beta

Original comment by Russel.V...@gmail.com on 20 Mar 2014 at 5:35

GoogleCodeExporter commented 9 years ago 
Same to. I was fine using Kali 386 but when I switch to x64 is when I started 
getting the error.

Original comment by Lordsai...@gmail.com on 25 Mar 2014 at 7:35

GoogleCodeExporter commented 9 years ago 
Little more info on the error..

root@kali:~# sudo java -jar ~/Desktop/burp/burpsuite_pro_v1.6beta.jar 
java.lang.NullPointerException
    at burp.yvb.a(Unknown Source)
    at burp.lkc.run(Unknown Source)
    at java.lang.Thread.run(Thread.java:679)

When I loaded the file.

In burp:

java.lang.UnsupportedClassVersionError: burp/BurpExtender : Unsupported 
major.minor version 51.0
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:634)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:277)
    at java.net.URLClassLoader.access$000(URLClassLoader.java:73)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:212)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:266)
    at burp.e0d.a(Unknown Source)
    at burp.e0d.<init>(Unknown Source)
    at burp.l0.a(Unknown Source)
    at burp.lkc.run(Unknown Source)
    at java.lang.Thread.run(Thread.java:679)

Original comment by Lordsai...@gmail.com on 25 Mar 2014 at 7:39

GoogleCodeExporter commented 9 years ago 
Using burpsuite_free_v1.6.jar on Kali 1.0.7 (32 bit).
Default java version from kali distro was "1.6.0_31"

Initially I got the Unsupported major.minor version 51.0 error listed above.
Updated Java version to "1.7.0_55" solved the problem for me.

Original comment by thesecma...@gmail.com on 23 Jun 2014 at 6:02

GoogleCodeExporter commented 9 years ago 
It looks like a Java version upgrade resolves the issue.  Oddly the stack trace 
doesn't even enter CO2 code so this is some library Burp is/was using.

Original comment by Jason.Gi...@gmail.com on 8 Aug 2014 at 12:00