UBUNTU-CVE-2021-37750

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    UBUNTU-CVE-2021-37750

    Published: 23 Aug 2021Last Modified: 22 Apr 2026
    Upstream:
    CVE-2021-37750
    Aliases:
    USN-5959-1

    Summary:

    Details: The Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.18.5 and 1.19.x before 1.19.3 has a NULL pointer dereference in kdc/do_tgs_req.c via a FAST inner body that lacks a server field.

    References: https://ubuntu.com/security/CVE-2021-37750, https://github.com/krb5/krb5/releases, https://web.mit.edu/kerberos/advisories/, https://ubuntu.com/security/notices/USN-5959-1, https://www.cve.org/CVERecord?id=CVE-2021-37750

    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-2021-37750 | CVE-DB