VULNERABILITY

Oracle Linux: CVE-2021-36222: ELSA-2021-3576: krb5 security update (MODERATE) (Multiple Advisories)

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Oracle Linux: CVE-2021-36222: ELSA-2021-3576: krb5 security update (MODERATE) (Multiple Advisories)

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
07/12/2021
Created
09/25/2021
Added
09/23/2021
Modified
11/27/2024

Description

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.

Solution(s)

  • oracle-linux-upgrade-krb5-devel
  • oracle-linux-upgrade-krb5-libs
  • oracle-linux-upgrade-krb5-pkinit
  • oracle-linux-upgrade-krb5-server
  • oracle-linux-upgrade-krb5-server-ldap
  • oracle-linux-upgrade-krb5-workstation
  • oracle-linux-upgrade-libkadm5

References

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