UBUNTU-CVE-2020-25719

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    UBUNTU-CVE-2020-25719

    Published: 9 Nov 2021Last Modified: 22 Apr 2026
    Upstream:
    CVE-2020-25719
    Aliases:
    USN-5142-1

    Summary:

    Details: A flaw was found in the way Samba, as an Active Directory Domain Controller, implemented Kerberos name-based authentication. The Samba AD DC, could become confused about the user a ticket represents if it did not strictly require a Kerberos PAC and always use the SIDs found within. The result could include total domain compromise.

    References: https://ubuntu.com/security/CVE-2020-25719, https://www.samba.org/samba/security/CVE-2020-25719.html, https://www.samba.org/samba/history/samba-4.13.14.html, https://ubuntu.com/security/notices/USN-5142-1, https://www.cve.org/CVERecord?id=CVE-2020-25719

    Affected packages

    Package

    Name: samba

    Purl: pkg:deb/ubuntu/samba@2:4.3.11+dfsg-0ubuntu0.14.04.20+esm15?arch=source&distro=esm-infra-legacy/trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    2:3.6.18-1ubuntu3

    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-2020-25719 | CVE-DB