An issue in AsyncSSH before 2.14.1 allows attackers to control the extension info message (RFC 8308) via a man-in-the-middle attack, aka a "Rogue Extension Negotiation."
CVSS Details
- CVSS 3.1 Base Score: 5.9
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade python-asyncssh | Sep 30, 2024 | Nov 14, 2023 |
| Progress Moveit Transfer | — | Disable vulnerable SSH algorithms in Progress MOVEit Transfer to mitigate the Terrapin vulnerability by updating the SFTP/SSH configuration to disable weak ciphers and MAC algorithms such as [email protected], aes128-cbc, aes192-cbc, aes256-cbc, and Encrypt-then-MAC (EtM) algorithms including [email protected] and [email protected], which are susceptible to SSH handshake manipulation; instead, allow only secure algorithms such as AES-GCM-based ciphers and restart MOVEit Transfer services for changes to take effect. | Nov 27, 2025 | Dec 21, 2023 |
| Ubuntu | — | Upgrade python3-asyncssh (Ubuntu Pro)Upgrade python3-asyncssh | Nov 19, 2024 | Nov 14, 2023 |
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