{
   "CVE_data_meta" : {
      "ASSIGNER" : "sfowler@redhat.com",
      "ID" : "CVE-2017-2669",
      "STATE" : "PUBLIC"
   },
   "affects" : {
      "vendor" : {
         "vendor_data" : [
            {
               "product" : {
                  "product_data" : [
                     {
                        "product_name" : "dovecot",
                        "version" : {
                           "version_data" : [
                              {
                                 "version_value" : "dovecot 2.2.29"
                              }
                           ]
                        }
                     }
                  ]
               },
               "vendor_name" : "[UNKNOWN]"
            }
         ]
      }
   },
   "data_format" : "MITRE",
   "data_type" : "CVE",
   "data_version" : "4.0",
   "description" : {
      "description_data" : [
         {
            "lang" : "eng",
            "value" : "Dovecot before version 2.2.29 is vulnerable to a denial of service. When 'dict' passdb and userdb were used for user authentication, the username sent by the IMAP/POP3 client was sent through var_expand() to perform %variable expansion. Sending specially crafted %variable fields could result in excessive memory usage causing the process to crash (and restart), or excessive CPU usage causing all authentications to hang."
         }
      ]
   },
   "impact" : {
      "cvss" : [
         [
            {
               "vectorString" : "3.7/CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
               "version" : "3.0"
            }
         ]
      ]
   },
   "problemtype" : {
      "problemtype_data" : [
         {
            "description" : [
               {
                  "lang" : "eng",
                  "value" : "CWE-20"
               }
            ]
         }
      ]
   },
   "references" : {
      "reference_data" : [
         {
            "name" : "[dovecot-news] 20170410 v2.2.29 released",
            "refsource" : "MLIST",
            "url" : "https://dovecot.org/pipermail/dovecot-news/2017-April/000341.html"
         },
         {
            "name" : "[oss-security] 20170411 CVE-2017-2669: Dovecot DoS when passdb dict was used for authentication",
            "refsource" : "MLIST",
            "url" : "http://www.openwall.com/lists/oss-security/2017/04/11/1"
         },
         {
            "name" : "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2669",
            "refsource" : "CONFIRM",
            "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2669"
         },
         {
            "name" : "https://github.com/dovecot/core/commit/000030feb7a30f193197f1aab8a7b04a26b42735.patch",
            "refsource" : "CONFIRM",
            "url" : "https://github.com/dovecot/core/commit/000030feb7a30f193197f1aab8a7b04a26b42735.patch"
         },
         {
            "name" : "DSA-3828",
            "refsource" : "DEBIAN",
            "url" : "https://www.debian.org/security/2017/dsa-3828"
         },
         {
            "name" : "97536",
            "refsource" : "BID",
            "url" : "http://www.securityfocus.com/bid/97536"
         }
      ]
   }
}