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Ubuntu: USN-5959-1 (CVE-2021-36222): Kerberos vulnerabilities

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Ubuntu: USN-5959-1 (CVE-2021-36222): Kerberos vulnerabilities

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
07/22/2021
Created
03/29/2023
Added
03/22/2023
Modified
03/22/2023

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.

Solution(s)

  • ubuntu-upgrade-krb5-k5tls
  • ubuntu-upgrade-krb5-kdc
  • ubuntu-upgrade-krb5-kdc-ldap
  • ubuntu-upgrade-krb5-pkinit

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