CVE-2021-36222

high

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.

References

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/

Details

Source: MITRE

Published: 2021-07-22

Updated: 2021-11-28

Type: CWE-476

Risk Information

CVSS v2

Base Score: 5

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3

Base Score: 7.5

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

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH