{
   "CVE_data_meta" : {
      "ASSIGNER" : "cve@mitre.org",
      "ID" : "CVE-2018-11518",
      "STATE" : "PUBLIC"
   },
   "affects" : {
      "vendor" : {
         "vendor_data" : [
            {
               "product" : {
                  "product_data" : [
                     {
                        "product_name" : "n/a",
                        "version" : {
                           "version_data" : [
                              {
                                 "version_value" : "n/a"
                              }
                           ]
                        }
                     }
                  ]
               },
               "vendor_name" : "n/a"
            }
         ]
      }
   },
   "data_format" : "MITRE",
   "data_type" : "CVE",
   "data_version" : "4.0",
   "description" : {
      "description_data" : [
         {
            "lang" : "eng",
            "value" : "A vulnerability allows a phreaking attack on HCL legacy IVR systems that do not use VoIP. These IVR systems rely on various frequencies of audio signals; based on the frequency, certain commands and functions are processed. Since these frequencies are accepted within a phone call, an attacker can record these frequencies and use them for service activations. This is a request-forgery issue when the required series of DTMF signals for a service activation is predictable (e.g., the IVR system does not speak a nonce to the caller). In this case, the IVR system accepts an activation request from a less-secure channel (any loudspeaker in the caller's physical environment) without verifying that the request was intended (it matches a nonce sent over a more-secure channel to the caller's earpiece)."
         }
      ]
   },
   "problemtype" : {
      "problemtype_data" : [
         {
            "description" : [
               {
                  "lang" : "eng",
                  "value" : "n/a"
               }
            ]
         }
      ]
   },
   "references" : {
      "reference_data" : [
         {
            "name" : "http://virgil-cj.blogspot.com/2018/05/0day-legacy-ivr-lets-phreak.html",
            "refsource" : "MISC",
            "url" : "http://virgil-cj.blogspot.com/2018/05/0day-legacy-ivr-lets-phreak.html"
         },
         {
            "name" : "https://datarift.blogspot.com/2018/05/CVE-2018-11518-abusing-ivr-systems.html",
            "refsource" : "MISC",
            "url" : "https://datarift.blogspot.com/2018/05/CVE-2018-11518-abusing-ivr-systems.html"
         },
         {
            "name" : "https://twitter.com/mishradhiraj_/status/1001664204485652482",
            "refsource" : "MISC",
            "url" : "https://twitter.com/mishradhiraj_/status/1001664204485652482"
         },
         {
            "name" : "https://twitter.com/mishradhiraj_/status/1001664440759091207",
            "refsource" : "MISC",
            "url" : "https://twitter.com/mishradhiraj_/status/1001664440759091207"
         }
      ]
   }
}