CVE-2021-36222 Information

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

https://github.com/krb5/krb5/releases https://web.mit.edu/kerberos/advisories/ https://github.com/krb5/krb5/commit/fc98f520caefff2e5ee9a0026fdf5109944b3562 https://www.debian.org/security/2021/dsa-4944 https://www.oracle.com/security-alerts/cpuoct2021.html https://security.netapp.com/advisory/ntap-20211022-0003/ https://security.netapp.com/advisory/ntap-20211104-0007/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5