USN-4854-1

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

Affected packages

Ubuntu:Pro:18.04:LTS / python-asyncssh

Package

Name: python-asyncssh
Purl: pkg:deb/ubuntu/python-asyncssh@1.11.1-1ubuntu0.1~esm1?arch=source&distro=esm-apps/bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.11.1-1ubuntu0.1~esm1

Affected versions

1.*

1.8.1-2

1.11.0-2

1.11.1-1

Ecosystem specific

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_version": "1.11.1-1ubuntu0.1~esm1",
            "binary_name": "python3-asyncssh"
        }
    ]
}

Database specific

{
    "cves_map": {
        "cves": [
            {
                "severity": [
                    {
                        "type": "CVSS_V3",
                        "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
                    },
                    {
                        "type": "Ubuntu",
                        "score": "high"
                    }
                ],
                "id": "CVE-2018-7749"
            }
        ],
        "ecosystem": "Ubuntu:Pro:18.04:LTS"
    }
}