UBUNTU-CVE-2021-44142

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    UBUNTU-CVE-2021-44142

    Published: 31 Jan 2022Last Modified: 22 Apr 2026
    Upstream:
    CVE-2021-44142

    Summary:

    Details: The Samba vfs_fruit module uses extended file attributes (EA, xattr) to provide "...enhanced compatibility with Apple SMB clients and interoperability with a Netatalk 3 AFP fileserver." Samba versions prior to 4.13.17, 4.14.12 and 4.15.5 with vfs_fruit configured allow out-of-bounds heap read and write via specially crafted extended file attributes. A remote attacker with write access to extended file attributes can execute arbitrary code with the privileges of smbd, typically root.

    References: https://ubuntu.com/security/CVE-2021-44142, https://www.samba.org/samba/security/CVE-2021-44142.html, https://ubuntu.com/security/notices/USN-5260-1, https://ubuntu.com/security/notices/USN-5260-2, https://ubuntu.com/security/notices/USN-5260-3, https://www.cve.org/CVERecord?id=CVE-2021-44142

    Affected packages

    Package

    Name: samba

    Purl: pkg:deb/ubuntu/samba@2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12?arch=source&distro=trusty/esm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12

    Affected versions

    2:3.6.18-1ubuntu3

    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-2021-44142 | CVE-DB