ActionPack versions prior to 3.2.22.2, 4.1.14.2, and 4.2.5.2
implement unsafe dynamic rendering of inline content such that
passing ERB wrapped Ruby code leads to remote execution.
This module only implements the Ruby payloads, but can easily
be extended to use system calls to execute native/alternate
payload types as well.
Test Procedures:
Clone https://github.com/hderms/dh-CVE_2016_2098
Run bundle install to match gem versions to those in lockfile
Run the rails server and configure the metasploit module:
Set TARGETURI to /exploits
Configure payload and handler options
Execute the module, move on to post-exp
Alan Foster