UBUNTU-CVE-2021-36222

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    UBUNTU-CVE-2021-36222

    Published: 22 Jul 2021Last Modified: 22 Apr 2026
    Upstream:
    CVE-2021-36222
    Aliases:
    USN-5959-1

    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://ubuntu.com/security/CVE-2021-36222, https://ubuntu.com/security/notices/USN-5959-1, https://www.cve.org/CVERecord?id=CVE-2021-36222

    Affected packages

    Package

    Name: krb5

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=bionic

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.16-2ubuntu0.4

    Affected versions

    1.15.1-2

    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
    UBUNTU-CVE-2021-36222 | CVE-DB