USN-4933-1

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    USN-4933-1

    Published: 4 May 2021Last Modified: 10 Feb 2026

    Summary: openvpn vulnerabilities

    Details: It was discovered that OpenVPN incorrectly handled certain data channel v2 packets. A remote attacker could possibly use this issue to inject packets using a victim's peer-id. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-11810) It was discovered that OpenVPN incorrectly handled deferred authentication. When a server is configured to use deferred authentication, a remote attacker could possibly use this issue to bypass authentication and access control channel data. (CVE-2020-15078)

    References: https://ubuntu.com/security/notices/USN-4933-1, https://ubuntu.com/security/CVE-2020-11810, https://ubuntu.com/security/CVE-2020-15078

    Affected packages

    Package

    Name: openvpn

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=bionic

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.4.4-2ubuntu1.5

    Affected versions

    2.4.3-4ubuntu1
    2.4.4-1ubuntu1
    2.4.4-2ubuntu1
    2.4.4-2ubuntu1.1
    2.4.4-2ubuntu1.2
    2.4.4-2ubuntu1.3

    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
    USN-4933-1 | CVE-DB