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CVE-2021-36222

Date: July 22, 2021

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.

Severity Score

Related Resources (13)

https://security-tracker.debian.org/tracker/CVE-2021-36222
https://security.alpinelinux.org/vuln/CVE-2021-36222
https://nvd.nist.gov/vuln/detail/CVE-2021-36222
https://access.redhat.com/security/cve/CVE-2021-36222
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-36222
https://github.com/krb5/krb5/releases
https://web.mit.edu/kerberos/advisories/
https://github.com/krb5/krb5/commit/fc98f520caefff2e5ee9a0026fdf5109944b3562
https://security.netapp.com/advisory/ntap-20211022-0003/
https://security.netapp.com/advisory/ntap-20211104-0007/
https://www.debian.org/security/2021/dsa-4944
https://www.oracle.com/security-alerts/cpuoct2021.html
https://www.mend.io/vulnerability-database/CVE-2021-36222

Severity Score

Weakness Type (CWE)

NULL Pointer Dereference

CWE-476

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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