USN-4854-1

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    USN-4854-1

    Published: 15 Mar 2021Last Modified: 10 Feb 2026

    Summary: python-asyncssh vulnerability

    Details: Matthijs Kooijman discovered that AsyncSSH server did not properly handle authentication under certain conditions. An attacker with a specially crafted client could use this vulnerability to skip authentication of SSH sessions.

    References: https://ubuntu.com/security/notices/USN-4854-1, https://ubuntu.com/security/CVE-2018-7749

    Affected packages

    Package

    Name: python-asyncssh

    Purl: pkg:deb/ubuntu/[email protected]~esm1?arch=source&distro=esm-apps/bionic

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.11.1-1ubuntu0.1~esm1

    Affected versions

    1.8.1-2

    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
    USN-4854-1 | CVE-DB