CVE-2021-20208

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    CVE-2021-20208

    Published: 19 Apr 2021Last Modified: 8 Jul 2026

    Summary:

    Details: A flaw was found in cifs-utils in versions before 6.13. A user when mounting a krb5 CIFS file system from within a container can use Kerberos credentials of the host. The highest threat from this vulnerability is to data confidentiality and integrity.

    References: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2W4HSDIWXXNQBUW5ZS37RQMLJ7THK5AS/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/66WJ3SVBHCSNQZAWSGLB6FBOCFU45FFG/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z4BZSJXROEFHYATAAHHRR6P3HUSMPQB3/, https://bugzilla.redhat.com/show_bug.cgi?id=1921116, https://bugzilla.samba.org/show_bug.cgi?id=14651

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- f54e674a82fc00e574e1ebbc77ba5841d8342b6d
    Fixed -464a60344a324311a6f5bb326fdf5f422a3c9005

    Affected versions

    cifs-utils-6.12

    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-2021-20208 | CVE-DB