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.
NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.
|Base Score:||7.5||Base Metrics:||AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H|
|Access Vector:||Network||Attack Complexity:||Low|
|Privileges Required:||None||User Interaction:||None|
|Integrity Impact:||None||Availability Impact:||High|
|Oracle Linux version 8 (krb5)||ELSA-2021-3576||2021-09-23|
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