CVE-2023-48795

The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other products, allows remote attackers to bypass integrity checks such that some packets are omitted (from the extension negotiation message), and a client and server may consequently end up with a connection for which some security features have been downgraded or disabled, aka a Terrapin attack. This occurs because the SSH Binary Packet Protocol (BPP), implemented by these extensions, mishandles the handshake phase and mishandles use of sequence numbers. For example, there is an effective attack against SSH's use of ChaCha20-Poly1305 (and CBC with Encrypt-then-MAC). The bypass occurs in chacha20-poly1305@openssh.com and (if CBC is used) the -etm@openssh.com MAC algorithms. This also affects Maverick Synergy Java SSH API before 3.1.0-SNAPSHOT, Dropbear through 2022.83, Ssh before 5.1.1 in Erlang/OTP, PuTTY before 0.80, AsyncSSH before 2.14.2, golang.org/x/crypto before 0.17.0, libssh before 0.10.6, libssh2 through 1.11.0, Thorn Tech SFTP Gateway before 3.4.6, Tera Term before 5.1, Paramiko before 3.4.0, jsch before 0.2.15, SFTPGo before 2.5.6, Netgate pfSense Plus through 23.09.1, Netgate pfSense CE through 2.7.2, HPN-SSH through 18.2.0, ProFTPD before 1.3.8b (and before 1.3.9rc2), ORYX CycloneSSH before 2.3.4, NetSarang XShell 7 before Build 0144, CrushFTP before 10.6.0, ConnectBot SSH library before 2.2.22, Apache MINA sshd through 2.11.0, sshj through 0.37.0, TinySSH through 20230101, trilead-ssh2 6401, LANCOM LCOS and LANconfig, FileZilla before 3.66.4, Nova before 11.8, PKIX-SSH before 14.4, SecureCRT before 9.4.3, Transmit5 before 5.10.4, Win32-OpenSSH before 9.5.0.0p1-Beta, WinSCP before 6.2.2, Bitvise SSH Server before 9.32, Bitvise SSH Client before 9.33, KiTTY through 0.76.1.13, the net-ssh gem 7.2.0 for Ruby, the mscdex ssh2 module before 1.15.0 for Node.js, the thrussh library before 0.35.1 for Rust, and the Russh crate before 0.40.2 for Rust.

• 9bis Kitty

  APP
  9Bis
  ≤ 0.76.1.13

• Apache Sshd

  APP
  Apache
  ≤ 2.11.0

• Apache Sshj

  APP
  Apache
  ≤ 0.37.0

• Apple macOS

  OS
  Apple
  14.0 – 14.4 (bez)

• Asyncssh Project Asyncssh

  APP
  Asyncssh Project
  < 2.14.2

• Bitvise Ssh Client

  APP
  Bitvise
  < 9.33

• Bitvise Ssh Server

  APP
  Bitvise
  < 9.32

• Connectbot Sshlib

  APP
  Connectbot
  < 2.2.22

• Crates Thrussh

  APP
  Crates
  < 0.35.1

• Crushftp

  APP
  Crushftp
  < 10.6.0≤ 10.6.0

• Debian

  OS
  Debian
  10.0

• Dropbear Ssh Project Dropbear Ssh

  APP
  Dropbear Ssh Project
  < 2022.83

• Erlang Erlang\/otp

  APP
  Erlang
  < 22.3.4.2726.0 – 26.2.1 (bez)25.0 – 25.3.2.8 (bez)24.0 – 24.3.4.15 (bez)23.0 – 23.3.4.20 (bez)

• Fedora Project Fedora

  OS
  Fedoraproject
  3839

• Filezilla Project Filezilla Client

  APP
  Filezilla-Project
  < 3.66.4

• Freebsd

  OS
  Freebsd
  ≤ 12.4

• Gentoo Security

  APP
  Gentoo
  wszystkie wersje

• Golang Crypto

  APP
  Golang
  < 0.17.0

• Jadaptive Maverick Synergy Java Ssh Api

  APP
  Jadaptive
  < 3.1.0-snapshot

• Lancom Systems Lanconfig

  OS
  Lancom-Systems
  wszystkie wersje

• Lancom Systems Lcos

  OS
  Lancom-Systems
  ≤ 3.66.4

• Lancom Systems Lcos Fx

  OS
  Lancom-Systems
  wszystkie wersje

• Lancom Systems Lcos Lx

  OS
  Lancom-Systems
  wszystkie wersje

• Lancom Systems Lcos Sx

  OS
  Lancom-Systems
  4.205.20

• Libssh

  APP
  Libssh
  < 0.10.6

• Libssh2

  APP
  Libssh2
  < 1.11.1

• Matez Jsch

  APP
  Matez
  < 0.2.15

• Netgate Pfsense Ce

  APP
  Netgate
  ≤ 2.7.2

• Netgate Pfsense Plus

  APP
  Netgate
  ≤ 23.09.1

• Netsarang Xshell 7

  APP
  Netsarang
  < build__0144