{
   "CVE_data_meta" : {
      "ASSIGNER" : "security@ubuntu.com",
      "DATE_PUBLIC" : "2018-08-21T00:00:00.000Z",
      "ID" : "CVE-2018-6557",
      "STATE" : "PUBLIC",
      "TITLE" : "Insecure temporary file use in base-files"
   },
   "affects" : {
      "vendor" : {
         "vendor_data" : [
            {
               "product" : {
                  "product_data" : [
                     {
                        "product_name" : "base-files",
                        "version" : {
                           "version_data" : [
                              {
                                 "affected" : "<",
                                 "version_value" : "10.1ubuntu2.2"
                              }
                           ]
                        }
                     }
                  ]
               },
               "vendor_name" : "Ubuntu"
            }
         ]
      }
   },
   "credit" : [
      {
         "lang" : "eng",
         "value" : "Sander Bos"
      }
   ],
   "data_format" : "MITRE",
   "data_type" : "CVE",
   "data_version" : "4.0",
   "description" : {
      "description_data" : [
         {
            "lang" : "eng",
            "value" : "The MOTD update script in the base-files package in Ubuntu 18.04 LTS before 10.1ubuntu2.2, and Ubuntu 18.10 before 10.1ubuntu6 incorrectly handled temporary files. A local attacker could use this issue to cause a denial of service, or possibly escalate privileges if kernel symlink restrictions were disabled."
         }
      ]
   },
   "problemtype" : {
      "problemtype_data" : [
         {
            "description" : [
               {
                  "lang" : "eng",
                  "value" : "Insecure Temporary File"
               }
            ]
         }
      ]
   },
   "references" : {
      "reference_data" : [
         {
            "name" : "USN-3748-1",
            "refsource" : "UBUNTU",
            "url" : "https://usn.ubuntu.com/3748-1/"
         },
         {
            "name" : "105148",
            "refsource" : "BID",
            "url" : "http://www.securityfocus.com/bid/105148"
         },
         {
            "name" : "1041530",
            "refsource" : "SECTRACK",
            "url" : "http://www.securitytracker.com/id/1041530"
         }
      ]
   },
   "source" : {
      "discovery" : "EXTERNAL"
   }
}