{
  "threat_severity" : "Moderate",
  "public_date" : "2020-11-06T00:00:00Z",
  "bugzilla" : {
    "description" : "krb5: unbounded recursion via an ASN.1-encoded Kerberos message in lib/krb5/asn.1/asn1_encode.c may lead to DoS",
    "id" : "1901041",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1901041"
  },
  "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-674",
  "details" : [ "MIT Kerberos 5 (aka krb5) before 1.17.2 and 1.18.x before 1.18.3 allows unbounded recursion via an ASN.1-encoded Kerberos message because the lib/krb5/asn.1/asn1_encode.c support for BER indefinite lengths lacks a recursion limit.", "A flaw was found in krb5. MIT Kerberos 5 allows unbounded recursion via an ASN.1-encoded Kerberos message because the lib/krb5/asn.1/asn1_encode.c support for BER indefinite lengths lacks a recursion limit." ],
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2021-05-18T00:00:00Z",
    "advisory" : "RHSA-2021:1593",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "krb5-0:1.18.2-8.el8"
  }, {
    "product_name" : "Red Hat Virtualization 4 for Red Hat Enterprise Linux 8",
    "release_date" : "2021-06-03T00:00:00Z",
    "advisory" : "RHSA-2021:2239",
    "cpe" : "cpe:/o:redhat:rhev_hypervisor:4.4::el8",
    "package" : "redhat-virtualization-host-0:4.4.6-20210527.3.el8_4"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 5",
    "fix_state" : "Not affected",
    "package_name" : "krb5",
    "cpe" : "cpe:/o:redhat:enterprise_linux:5"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Not affected",
    "package_name" : "krb5",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "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 JBoss Core Services",
    "fix_state" : "Not affected",
    "package_name" : "krb5",
    "cpe" : "cpe:/a:redhat:jboss_core_services:1"
  }, {
    "product_name" : "Red Hat JBoss Enterprise Web Server 2",
    "fix_state" : "Out of support scope",
    "package_name" : "krb5",
    "cpe" : "cpe:/a:redhat:jboss_enterprise_web_server:2"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2020-28196\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-28196" ],
  "name" : "CVE-2020-28196",
  "csaw" : false
}