{
   "CVE_data_meta" : {
      "ASSIGNER" : "lpardo@redhat.com",
      "ID" : "CVE-2018-10903",
      "STATE" : "PUBLIC"
   },
   "affects" : {
      "vendor" : {
         "vendor_data" : [
            {
               "product" : {
                  "product_data" : [
                     {
                        "product_name" : "python-cryptography",
                        "version" : {
                           "version_data" : [
                              {
                                 "version_value" : "2.3"
                              }
                           ]
                        }
                     }
                  ]
               },
               "vendor_name" : "[UNKNOWN]"
            }
         ]
      }
   },
   "data_format" : "MITRE",
   "data_type" : "CVE",
   "data_version" : "4.0",
   "description" : {
      "description_data" : [
         {
            "lang" : "eng",
            "value" : "A flaw was found in python-cryptography versions between >=1.9.0 and <2.3. The finalize_with_tag API did not enforce a minimum tag length. If a user did not validate the input length prior to passing it to finalize_with_tag an attacker could craft an invalid payload with a shortened tag (e.g. 1 byte) such that they would have a 1 in 256 chance of passing the MAC check. GCM tag forgeries can cause key leakage."
         }
      ]
   },
   "impact" : {
      "cvss" : [
         [
            {
               "vectorString" : "7.5/CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
               "version" : "3.0"
            }
         ]
      ]
   },
   "problemtype" : {
      "problemtype_data" : [
         {
            "description" : [
               {
                  "lang" : "eng",
                  "value" : "CWE-20"
               }
            ]
         }
      ]
   },
   "references" : {
      "reference_data" : [
         {
            "name" : "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10903",
            "refsource" : "CONFIRM",
            "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10903"
         },
         {
            "name" : "https://github.com/pyca/cryptography/pull/4342/commits/688e0f673bfbf43fa898994326c6877f00ab19ef",
            "refsource" : "CONFIRM",
            "url" : "https://github.com/pyca/cryptography/pull/4342/commits/688e0f673bfbf43fa898994326c6877f00ab19ef"
         },
         {
            "name" : "USN-3720-1",
            "refsource" : "UBUNTU",
            "url" : "https://usn.ubuntu.com/3720-1/"
         }
      ]
   }
}