{
  "threat_severity" : "Important",
  "public_date" : "2023-08-16T00:00:00Z",
  "bugzilla" : {
    "description" : "krb5: double-free in KDC TGS processing",
    "id" : "2232682",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2232682"
  },
  "cvss3" : {
    "cvss3_base_score" : "8.8",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-415",
  "details" : [ "kdc/do_tgs_req.c in MIT Kerberos 5 (aka krb5) 1.21 before 1.21.2 has a double free that is reachable if an authenticated user can trigger an authorization-data handling failure. Incorrect data is copied from one ticket to another.", "A vulnerability was found in MIT krb5, where an authenticated attacker can cause a KDC to free the same pointer twice if it can induce a failure in authorization data handling." ],
  "statement" : "This vulnerability is rated as an Important because a double-free vulnerability was found in krb5 KDC within the TGS processing logic. The flaw is triggered when an authenticated attacker sends a TGS renew or validate request that induces a failure in authorization data handling. This action causes the same memory pointer to be freed twice, leading to a crash, successful exploitation could lead to disclosure of sensitive information, addition or modification of data, or Denial of Service (DoS).",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2023-11-07T00:00:00Z",
    "advisory" : "RHSA-2023:6699",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "krb5-0:1.21.1-1.el9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2023-11-07T00:00:00Z",
    "advisory" : "RHSA-2023:6699",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "package" : "krb5-0:1.21.1-1.el9"
  } ],
  "package_state" : [ {
    "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" : "Not affected",
    "package_name" : "krb5",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "package_name" : "krb5",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2023-39975\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-39975" ],
  "name" : "CVE-2023-39975",
  "csaw" : false
}