CVE-2021-36222

    Dashboard / Vulnerabilities / CVE-2021-36222

    CVE-2021-36222

    Published: 22 Jul 2021Last Modified: 8 Jul 2026

    Summary:

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

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -05405c3d24c2d84ba79e355ae82f4b1b9884938c

    Affected versions

    krb5-1.19.1-final

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2021-36222 | CVE-DB