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.
Fix
Patch, vendor advisory and mitigation references on NVD 4
- https://github.com/krb5/krb5/commit/fc98f520caefff2e5ee9a0026fdf5109944b3562 Patch, Third Party Advisory
- https://www.oracle.com/security-alerts/cpuoct2021.html Patch, Third Party Advisory
- https://github.com/krb5/krb5/commit/fc98f520caefff2e5ee9a0026fdf5109944b3562 Patch, Third Party Advisory
- https://www.oracle.com/security-alerts/cpuoct2021.html Patch, Third Party Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.5 · mit, debian, netappNVD modified 2026-10-14 12:17
Affected (CPE criteria) 8
cpe:2.3:a:mit:kerberos_5:*:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:windows:*:*cpe:2.3:a:netapp:oncommand_insight:-:*:*:*:*:*:*:*cpe:2.3:a:netapp:oncommand_workflow_automation:-:*:*:*:*:*:*:*cpe:2.3:a:netapp:snapcenter:-:*:*:*:*:*:*:*cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*
References 15
- https://github.com/krb5/krb5/commit/fc98f520caefff2e5ee9a0026fdf5109944b3562 Patch, Third Party Advisory
- https://github.com/krb5/krb5/releases Release Notes, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20211022-0003/ Third Party Advisory
- https://security.netapp.com/advisory/ntap-20211104-0007/ Third Party Advisory
- https://web.mit.edu/kerberos/advisories/ Not Applicable
- https://www.debian.org/security/2021/dsa-4944 Third Party Advisory
- https://www.oracle.com/security-alerts/cpuoct2021.html Patch, Third Party Advisory
- https://github.com/krb5/krb5/commit/fc98f520caefff2e5ee9a0026fdf5109944b3562 Patch, Third Party Advisory
- https://github.com/krb5/krb5/releases Release Notes, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20211022-0003/ Third Party Advisory
- https://security.netapp.com/advisory/ntap-20211104-0007/ Third Party Advisory
- https://web.mit.edu/kerberos/advisories/ Not Applicable
- https://www.debian.org/security/2021/dsa-4944 Third Party Advisory
- https://www.oracle.com/security-alerts/cpuoct2021.html Patch, Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html