CVE-2009-5147 dlopen漏洞

INFO

CVE-2009-5147 and CVE-2015-7551 PoC

to run it:

````
make foo
export FOO=./foo.so
ruby -v foo.rb
````

with different versions of ruby you should get different results:

````
email protected:~/poc> rvm use 2.1.7
email protected:~/poc> ruby -v foo.rb
ruby 2.1.7p400 (2015-08-18 revision 51632) x86_64-linux
some trash fom your environment variables...

email protected:~/poc> rvm use 2.3.0
email protected:~/poc> ruby -v foo.rb
ruby 2.3.0p0 (2015-12-25 revision 53290) x86_64-linux
CVE-2009-5147 fixed
````

The file ```foo2.rb``` is for the CVE-2015-7551