{
  "Name": "Dahua DSS RCE (CNVD-2017-08805)",
  "Description": "Dahua DSS-Safe City uses Apache Struts 2 as the website application framework. Because the application framework has a remote command execution vulnerability, an attacker can trigger the vulnerability by modifying the Content-Type value in the HTTP request header when uploading a file, and then execute it. System commands to obtain server permissions.",
  "Product": "Dahua-DSS",
  "Homepage": "http://www.dahuatech.com/product_detail-1471.html",
  "DisclosureDate": "2021-06-08",
  "Author": "atdpa4sw0rd@gmail.com",
  "GobyQuery": "app=\"Dahua-DSS\"",
  "Level": "3",
  "Impact": "<p>Attackers can use this vulnerability to execute arbitrary commands on the server and write into the backdoor, thereby invading the server and obtaining the server's administrator rights.<br></p>",
  "Recommendation": "<p>1. Dahua officials have fixed the vulnerability. The system is a commercial product. Contact Dahua local technical support personnel or Dahua Security Emergency Response Center DHCC to obtain the patch: cybersecurity@dahuatech.com<br></p><p>2. If it is not necessary, prohibit the device from connecting to the Internet.<br></p><p>3. Strictly filter the data entered by the user and prohibit the execution of system commands.<br></p>",
  "References": [
    "http://www.cnvd.org.cn/flaw/show/CNVD-2017-08805"
  ],
  "HasExp": true,
  "ExpParams": [
    {
      "name": "cmd",
      "type": "input",
      "value": "uname -a"
    }
  ],
  "ExpTips": {
    "Type": "",
    "Content": ""
  },
  "ScanSteps": [
    "AND",
    {
      "Request": {
        "method": "GET",
        "uri": "/test.php",
        "follow_redirect": true,
        "header": {},
        "data_type": "text",
        "data": ""
      },
      "ResponseTest": {
        "type": "group",
        "operation": "AND",
        "checks": [
          {
            "type": "item",
            "variable": "$code",
            "operation": "==",
            "value": "200",
            "bz": ""
          },
          {
            "type": "item",
            "variable": "$body",
            "operation": "contains",
            "value": "test",
            "bz": ""
          }
        ]
      },
      "SetVariable": []
    }
  ],
  "ExploitSteps": null,
  "Tags": [
    "RCE"
  ],
  "CVEIDs": null,
  "CVSSScore": "0.0",
  "AttackSurfaces": {
    "Application": null,
    "Support": null,
    "Service": null,
    "System": null,
    "Hardware": null
  }
}