GHSA-232r-66cg-79px Paramiko not properly checking authentication before processing other requests

• PyPI paramiko: >= 2.0.0, < 2.0.8 → fixed in 2.0.8 • PyPI paramiko: >= 2.1.0, < 2.1.5 → fixed in 2.1.5 • PyPI paramiko: >= 2.2.0, < 2.2.3 → fixed in 2.2.3 • PyPI paramiko: >= 2.3.0, < 2.3.2 → fixed in 2.3.2 • PyPI paramiko: >= 2.4.0, < 2.4.1 → fixed in 2.4.1 • PyPI paramiko: >= 1.18.0, < 1.18.5 → fixed in 1.18.5 • PyPI paramiko: < 1.17.6 → fixed in 1.17.6

transport.py in the SSH server implementation of Paramiko before 1.17.6, 1.18.x before 1.18.5, 2.0.x before 2.0.8, 2.1.x before 2.1.5, 2.2.x before 2.2.3, 2.3.x before 2.3.2, and 2.4.x before 2.4.1 does not properly check whether authentication is completed before processing other requests, as demonstrated by channel-open. A customized SSH client can simply skip the authentication step.