CVE-2023-46445

2023-11-1718:51:51

redhat.com

access.redhat.com

cve-2023-46445

python-asyncssh

extension negotiation

info message injection

authentication downgrade

message integrity

5.9 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

5.4 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

32.2%

JSON

A flaw was found in python-asyncssh before 2.14.1 versions, where the rogue extension negotiation process is unauthenticated and allows injecting an info message. This flaw allows an attacker to replace the original message, downgrading the algorithm used for client authentication, which affects the integrity of the message.