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Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS : AsyncSSH vulnerabilities (USN-7108-1)

medium Nessus Plugin ID 210948

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7108-1 advisory.

 Fabian Bumer, Marcus Brinkmann, and Jrg Schwenk discovered that the SSH protocol was vulnerable to a rogue extension negotiation attack. If a remote attacker was able to intercept SSH communications, extension info message could be replaced, possibly leading to certain algorithms and features being downgraded.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected python3-asyncssh package.

See Also

https://ubuntu.com/security/notices/USN-7108-1

Plugin Details

Severity: Medium

ID: 210948

File Name: ubuntu_USN-7108-1.nasl

Version: 1.1

Type: local

Agent: unix

Published: 11/14/2024

Updated: 11/14/2024

Supported Sensors: Agentless Assessment, continuous_assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: Medium

Base Score: 6.6

Temporal Score: 5.2

Vector: CVSS2#AV:N/AC:H/Au:S/C:C/I:C/A:N

CVSS Score Source: CVE-2023-46446

CVSS v3

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 6.1

Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:python3-asyncssh, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, cpe:/o:canonical:ubuntu_linux:22.04:-:lts

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/14/2024

Vulnerability Publication Date: 11/9/2023

Reference Information

CVE: CVE-2023-46445, CVE-2023-46446

USN: 7108-1