UBUNTU-CVE-2021-44730

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    UBUNTU-CVE-2021-44730

    Published: 17 Feb 2022Last Modified: 4 Feb 2026
    Upstream:
    CVE-2021-44730

    Summary:

    Details: snapd 2.54.2 did not properly validate the location of the snap-confine binary. A local attacker who can hardlink this binary to another location to cause snap-confine to execute other arbitrary binaries and hence gain privilege escalation. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1

    References: https://ubuntu.com/security/CVE-2021-44730, https://ubuntu.com/security/notices/USN-5292-1, https://www.openwall.com/lists/oss-security/2022/02/17/2, https://github.com/snapcore/snapd/commit/f3f669d720ed8b0bcb73da7789843bf43b5c16cf, https://www.cve.org/CVERecord?id=CVE-2021-44730, https://ubuntu.com/security/notices/USN-5292-3, https://ubuntu.com/security/notices/USN-5292-2

    Affected packages

    Package

    Name: snapd

    Purl: pkg:deb/ubuntu/[email protected]+14.04~esm1?arch=source&distro=trusty/esm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.54.3+14.04~esm1

    Affected versions

    2.21~14.04.2

    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-2021-44730 | CVE-DB