CVE-2021-20316

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    CVE-2021-20316

    Published: 23 Aug 2022Last Modified: 8 Jul 2026

    Summary:

    Details: A flaw was found in the way Samba handled file/directory metadata. This flaw allows an authenticated attacker with permissions to read or modify share metadata, to perform this operation outside of the share.

    References: https://access.redhat.com/security/cve/CVE-2021-20316, https://security-tracker.debian.org/tracker/CVE-2021-20316, https://security.gentoo.org/glsa/202309-06, https://www.samba.org/samba/security/CVE-2021-20316.html, https://bugzilla.redhat.com/show_bug.cgi?id=2009673, https://bugzilla.samba.org/show_bug.cgi?id=14842

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -fc8342bd26d1c55ca5780b427f675f31147b27f9

    Affected versions

    samba-4.15.0rc7
    samba-4.15.0rc6
    samba-4.15.0rc5
    samba-4.15.0rc4
    samba-4.15.0rc3
    samba-4.15.0rc2
    samba-4.15.0rc1

    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-2021-20316 | CVE-DB