Ubuntu update for python-asyncssh

Published: 2024-12-12

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2023-46445 CVE-2023-46446
CWE-ID	CWE-345
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Ubuntu Operating systems & Components / Operating system python3-asyncssh (Ubuntu package) Operating systems & Components / Operating system package or component
Vendor	Canonical Ltd.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Insufficient verification of data authenticity

EUVDB-ID: #VU84954

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-46445

CWE-ID: CWE-345 - Insufficient Verification of Data Authenticity

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists due to missing verification of data authenticity. A remote attacker can control the extension info message (RFC 8308) via a man-in-the-middle attack.

Mitigation

Update the affected package python-asyncssh to the latest version.

Vulnerable software versions

Ubuntu: 18.04

python3-asyncssh (Ubuntu package): before Ubuntu Pro

CPE2.3

External links

https://ubuntu.com/security/notices/USN-7108-2

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Insufficient verification of data authenticity

EUVDB-ID: #VU84953