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 [email protected] and (if CBC is used) the [email protected] 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.

• openbsd openssh (< 9.6) • putty putty (< 0.80) • filezilla-project filezilla client (< 3.66.4) • panic transmit 5 (< 5.10.4) • panic nova (< 11.8) • roumenpetrov pkixssh (< 14.4) • winscp winscp (< 6.2.2) • bitvise ssh client (< 9.33) • bitvise ssh server (< 9.32) • lancom-systems lcos (<= 3.66.4) • lancom-systems lcos fx • lancom-systems lcos lx • lancom-systems lcos sx 4.20 • lancom-systems lcos sx 5.20 • lancom-systems lanconfig • vandyke securecrt (< 9.4.3) • libssh libssh (< 0.10.6) • net-ssh net-ssh 7.2.0 • ssh2 project ssh2 (<= 1.11.0) • proftpd proftpd (<= 1.3.8b) • freebsd freebsd (<= 12.4) • crates thrussh (< 0.35.1) • tera term project tera term (<= 5.1) • oryx-embedded cyclone ssh (< 2.3.4) • crushftp crushftp (<= 10.6.0) • netsarang xshell 7 (< build 0144) • paramiko paramiko (< 3.4.0) • redhat openshift container platform 4.0 • redhat openstack platform 16.1 • redhat openstack platform 16.2 • redhat openstack platform 17.1 • redhat ceph storage 6.0 • redhat enterprise linux 8.0 • redhat enterprise linux 9.0 • redhat openshift serverless • redhat openshift gitops • redhat openshift pipelines • redhat openshift developer tools and services • redhat openshift data foundation 4.0 • redhat openshift api for data protection • redhat openshift virtualization 4 • redhat storage 3.0 • redhat discovery • redhat openshift dev spaces • redhat cert-manager operator for red hat openshift • redhat keycloak • redhat jboss enterprise application platform 7.0 • redhat single sign-on 7.0 • redhat advanced cluster security 3.0 • redhat advanced cluster security 4.0 • golang crypto (< 0.17.0) • russh project russh (< 0.40.2) • sftpgo project sftpgo (< 2.5.6) • erlang erlang\/otp (< 22.3.4.27) • erlang erlang\/otp (>= 23.0 < 23.3.4.20) • erlang erlang\/otp (>= 24.0 < 24.3.4.15) • erlang erlang\/otp (>= 25.0 < 25.3.2.8) • erlang erlang\/otp (>= 26.0 < 26.2.1) • matez jsch (< 0.2.15) • libssh2 libssh2 (< 1.11.1) … and 23 more