UBUNTU-CVE-2021-23192

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    UBUNTU-CVE-2021-23192

    Published: 9 Nov 2021Last Modified: 22 Apr 2026
    Upstream:
    CVE-2021-23192
    Aliases:
    USN-5142-1

    Summary:

    Details: A flaw was found in the way samba implemented DCE/RPC. If a client to a Samba server sent a very large DCE/RPC request, and chose to fragment it, an attacker could replace later fragments with their own data, bypassing the signature requirements.

    References: https://ubuntu.com/security/CVE-2021-23192, https://www.samba.org/samba/security/CVE-2021-23192.html, https://www.samba.org/samba/history/samba-4.13.14.html, https://ubuntu.com/security/notices/USN-5142-1, https://www.cve.org/CVERecord?id=CVE-2021-23192

    Affected packages

    Package

    Name: samba

    Purl: pkg:deb/ubuntu/samba@2:4.13.14+dfsg-0ubuntu0.20.04.1?arch=source&distro=focal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2:4.13.14+dfsg-0ubuntu0.20.04.1

    Affected versions

    2:4.10.7+dfsg-0ubuntu2
    2:4.10.7+dfsg-0ubuntu3

    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-2021-23192 | CVE-DB