{
  "threat_severity" : "Moderate",
  "public_date" : "2021-07-12T00:00:00Z",
  "bugzilla" : {
    "description" : "krb5: Sending a request containing PA-ENCRYPTED-CHALLENGE padata element without using FAST could result in NULL dereference in KDC which leads to DoS",
    "id" : "1983720",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1983720"
  },
  "cvss3" : {
    "cvss3_base_score" : "7.5",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-476",
  "details" : [ "ec_verify in kdc/kdc_preauth_ec.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.18.4 and 1.19.x before 1.19.2 allows remote attackers to cause a NULL pointer dereference and daemon crash. This occurs because a return value is not properly managed in a certain situation.", "A flaw was found in krb5. This flaw allows an unauthenticated attacker to cause a NULL dereference in the KDC by sending a request containing a PA-ENCRYPTED-CHALLENGE padata element without using FAST. The highest threat from this vulnerability is to system availability." ],
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2021-09-21T00:00:00Z",
    "advisory" : "RHSA-2021:3576",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "krb5-0:1.18.2-8.3.el8_4"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Out of support scope",
    "package_name" : "krb5",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Not affected",
    "package_name" : "krb5",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  }, {
    "product_name" : "Red Hat JBoss Core Services",
    "fix_state" : "Not affected",
    "package_name" : "krb5",
    "cpe" : "cpe:/a:redhat:jboss_core_services:1"
  }, {
    "product_name" : "Red Hat JBoss Enterprise Application Platform 6",
    "fix_state" : "Not affected",
    "package_name" : "krb5",
    "cpe" : "cpe:/a:redhat:jboss_enterprise_application_platform:6"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2021-36222\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-36222\nhttps://github.com/krb5/krb5/commit/fc98f520caefff2e5ee9a0026fdf5109944b3562" ],
  "name" : "CVE-2021-36222",
  "csaw" : false
}