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 (7)
Core 7
Core References
Not Applicable x_refsource_misc
https://web.mit.edu/kerberos/advisories/
Release Notes, Third Party Advisory x_refsource_misc
https://github.com/krb5/krb5/releases
Third Party Advisory vendor-advisory
x_refsource_debian
https://www.debian.org/security/2021/dsa-4944
Patch, Third Party Advisory x_refsource_misc
https://www.oracle.com/security-alerts/cpuoct2021.html
Patch, Third Party Advisory x_refsource_confirm
https://github.com/krb5/krb5/commit/fc98f520caefff2e5ee9a0026fdf5109944b3562
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20211022-0003/
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20211104-0007/
Scores
CVSS v3
7.5
EPSS
0.0662
EPSS Percentile
91.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-476
Status
published
Products (7)
debian/debian_linux
10.0
mit/kerberos_5
< 1.18.4
netapp/active_iq_unified_manager
(2 CPE variants)
netapp/oncommand_insight
netapp/oncommand_workflow_automation
netapp/snapcenter
oracle/mysql_server
8.0.0 - 8.0.26
Published
Jul 22, 2021
Tracked Since
Feb 18, 2026