Class: Dap::Filter::FilterVulnMatchHTTP

Inherits:
Object
  • Object
show all
Includes:
Base, BaseVulnMatch
Defined in:
lib/dap/filter/vulnmatch.rb

Instance Attribute Summary

Attributes included from Base

#name, #opts

Instance Method Summary collapse

Methods included from BaseVulnMatch

#lookup, #search

Methods included from Base

#initialize

Instance Method Details

#check_elastic(doc) ⇒ Object 



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# File 'lib/dap/filter/vulnmatch.rb', line 90

def check_elastic(doc)
  if not doc['http.path']
    return []
  end
  if not doc['http.path'] == '/_search'
    return []
  end

  input = doc['http.url']
  if doc['http.method'] == "POST"
    input = doc['http.body']
  end

  if not input.match("script_fields")
    return []
  end

  out = ['VULN-ELASTICSEARCH-RCE', 'CVE-2014-3120']
  if input.match("Runtime") and input.match("getRuntime()")
    out += ["EXEC-SHELLCMD"]
  end

  if input.match("FileOutputStream") and input.match("URLClassLoader")
    out += ["EXEC-JAVA-CLASS"]
  end

  if input.match("getDeclaredConstructor")
    out += ['CVE-2015-1427']
  end

  if input.match("metasploit.Payload")
    out += ['METASPLOIT']
  end

  return out
end

#check_shellshock(doc) ⇒ Object 



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# File 'lib/dap/filter/vulnmatch.rb', line 71

def check_shellshock(doc)
  if not doc["http.headers"]
    return []
  end

  h = doc["http.headers"]
  sspattern = /\(\)\s*{\s*:;\s*};/

  if h["user-agent"] and h["user-agent"] =~ sspattern
    return ['VULN-SHELLSHOCK', 'CVE-2014-6271']
  end

  if h["referrer"] and h["referrer"] =~ sspattern
    return ['VULN-SHELLSHOCK', 'CVE-2014-6271']
  end

  return []
end

#process(doc) ⇒ Object 



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# File 'lib/dap/filter/vulnmatch.rb', line 127

def process(doc)
  vulns = []
  if doc['vulnerability']
    vulns |= doc['vulnerability']
  end

  vulns |= check_elastic(doc)
  vulns |= check_shellshock(doc)

  # see vulndb.rb, allows for simple matches to be added quickly
  SEARCHES[:http].each do | entry |
    success = true

    # all matches must go through
    entry[:match].each do | k, v |
      if not doc[k]
        success = false
      else
        m = doc[k].match(v)
        if not m
          success = false
        end
      end

      if not success
        break
      end
    end

    if success
      vulns |= entry[:cve]
    end
  end

  if vulns != []
    doc['vulnerability'] = vulns
  end

  [ doc ]
end