GHSA-7452-xqpj-6rpc

    Dashboard / Vulnerabilities / GHSA-7452-xqpj-6rpc

    GHSA-7452-xqpj-6rpc

    Published: 31 Jan 2024Last Modified: 10 Sept 2026

    Summary: moby Access to remapped root allows privilege escalation to real root

    Details: ### Impact When using `--userns-remap`, if the root user in the remapped namespace has access to the host filesystem they can modify files under `/var/lib/docker/<remapping>` that cause writing files with extended privileges. ### Patches Versions 20.10.3 and 19.03.15 contain patches that prevent privilege escalation from remapped user. ### Credits Maintainers would like to thank Alex Chapman for discovering the vulnerability; @awprice, @nathanburrell, @raulgomis, @chris-walz, @erin-jensby, @bassmatt, @mark-adams, @dbaxa for working on it and Zac Ellis for responsibly disclosing it to [email protected]

    References: https://github.com/moby/moby/security/advisories/GHSA-7452-xqpj-6rpc, https://nvd.nist.gov/vuln/detail/CVE-2021-21284, https://github.com/moby/moby/commit/64bd4485b3a66a597c02c95f5776395e540b2c7c, https://docs.docker.com/engine/release-notes/#20103, https://github.com/moby/moby/releases/tag/v19.03.15, https://github.com/moby/moby/releases/tag/v20.10.3, https://security.gentoo.org/glsa/202107-23, https://security.netapp.com/advisory/ntap-20210226-0005, https://www.debian.org/security/2021/dsa-4865

    Affected packages

    Package

    Name: github.com/moby/moby

    Purl: pkg:golang/github.com/moby/moby

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0
    Fixed -19.3.15

    Affected versions

    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
    GHSA-7452-xqpj-6rpc | CVE-DB