UBUNTU-CVE-2018-7749

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    UBUNTU-CVE-2018-7749

    Published: 12 Mar 2018Last Modified: 4 Feb 2026
    Upstream:
    CVE-2018-7749
    Aliases:
    USN-4854-1

    Summary:

    Details: The SSH server implementation of AsyncSSH before 1.12.1 does not properly check whether authentication is completed before processing other requests. A customized SSH client can simply skip the authentication step.

    References: https://ubuntu.com/security/CVE-2018-7749, https://github.com/ronf/asyncssh/commit/16e6ebfa893167c7d9d3f6dc7a2c0d197e47f43a, https://github.com/ronf/asyncssh/commit/c161e26cdc0d41b745b63d9f17b437f073bf7ba4, https://ubuntu.com/security/notices/USN-4854-1, https://www.cve.org/CVERecord?id=CVE-2018-7749

    Affected packages

    Package

    Name: python-asyncssh

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    1.2.0-1
    1.2.1-1

    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-2018-7749 | CVE-DB