CVE-2021-41089

    Dashboard / Vulnerabilities / CVE-2021-41089

    CVE-2021-41089

    Published: 4 Oct 2021Last Modified: 7 Aug 2026

    Summary:

    Details: Moby is an open-source project created by Docker to enable software containerization. A bug was found in Moby (Docker Engine) where attempting to copy files using `docker cp` into a specially-crafted container can result in Unix file permission changes for existing files in the host’s filesystem, widening access to others. This bug does not directly allow files to be read, modified, or executed without an additional cooperating process. This bug has been fixed in Moby (Docker Engine) 20.10.9. Users should update to this version as soon as possible. Running containers do not need to be restarted.

    References: https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/B5Q6G6I4W5COQE25QMC7FJY3I3PAYFBB/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZNFADTCHHYWVM6W4NJ6CB4FNFM2VMBIB/, https://github.com/moby/moby/security/advisories/GHSA-v994-f8vw-g7j4, https://github.com/moby/moby/commit/bce32e5c93be4caf1a592582155b9cb837fc129a

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -79ea9d3080181d755855d5924d0f4f116faa9463

    Affected versions

    v20.10.8
    v20.10.7
    v20.10.6
    v20.10.5
    v20.10.4
    v20.10.3
    v20.10.2
    v20.10.1
    v20.10.0
    v20.10.0-rc2
    v20.10.0-rc1
    v20.10.0-beta1

    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-2021-41089 | CVE-DB