module

Ruby on Rails JSON Processor Floating Point Heap Overflow DoS

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Disclosed
Nov 22, 2013
Created
May 30, 2018

Description

When Ruby attempts to convert a string representation of a large floating point
decimal number to its floating point equivalent, a heap-based buffer overflow
can be triggered. This module has been tested successfully on a Ruby on Rails application
using Ruby version 1.9.3-p448 with WebRick and Thin web servers, where the Rails application
crashes with a segfault error. Other versions of Ruby are reported to be affected.

Authors

Charlie Somerville
joev [email protected]
todb [email protected]

References

Module Options

To display the available options, load the module within the Metasploit console and run the commands 'show options' or 'show advanced':


    msf > use auxiliary/dos/http/rails_json_float_dos
    msf auxiliary(rails_json_float_dos) > show actions
        ...actions...
    msf auxiliary(rails_json_float_dos) > set ACTION < action-name >
    msf auxiliary(rails_json_float_dos) > show options
        ...show and set options...
    msf auxiliary(rails_json_float_dos) > run
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