Unknown
CVE-2023-48795
CVE-2023-48795
Description
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.
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CVSS V3 Severity and Metrics
General Information
Vendors
- 9bis,
- apache,
- apple,
- asyncssh project,
- bitvise,
- connectbot,
- crates,
- crushftp,
- debian,
- dropbear ssh project,
- erlang,
- fedoraproject,
- filezilla-project,
- freebsd,
- gentoo,
- golang,
- jadaptive,
- lancom-systems,
- libssh,
- libssh2,
- matez,
- microsoft,
- net-ssh,
- netgate,
- netsarang,
- openbsd,
- oryx-embedded,
- panic,
- paramiko,
- proftpd,
- putty,
- redhat,
- roumenpetrov,
- russh project,
- sftpgo project,
- ssh,
- ssh2 project,
- tera term project,
- thorntech,
- tinyssh,
- trilead,
- vandyke,
- winscp
Products
- advanced cluster security 3.0,
- advanced cluster security 4.0,
- asyncssh,
- ceph storage 6.0,
- cert-manager operator for red hat openshift -,
- crushftp,
- crypto,
- cyclone ssh,
- debian linux 10.0,
- discovery -,
- dropbear ssh,
- enterprise linux 8.0,
- enterprise linux 9.0,
- erlang/otp,
- fedora 38,
- fedora 39,
- filezilla client,
- freebsd,
- jboss enterprise application platform 7.0,
- jsch,
- keycloak -,
- kitty,
- lanconfig -,
- lcos,
- lcos fx -,
- lcos lx -,
- lcos sx 4.20,
- lcos sx 5.20,
- libssh,
- libssh2,
- macos,
- maverick synergy java ssh api,
- net-ssh 7.2.0,
- nova,
- openshift api for data protection -,
- openshift container platform 4.0,
- openshift data foundation 4.0,
- openshift dev spaces -,
- openshift developer tools and services -,
- openshift gitops -,
- openshift pipelines -,
- openshift serverless -,
- openshift virtualization 4,
- openssh,
- openstack platform 16.1,
- openstack platform 16.2,
- openstack platform 17.1,
- paramiko,
- pfsense ce,
- pfsense plus,
- pkixssh,
- powershell,
- proftpd,
- putty,
- russh,
- securecrt,
- security -,
- sftp gateway firmware,
- sftpgo,
- single sign-on 7.0,
- ssh,
- ssh client,
- ssh server,
- ssh2,
- ssh2 6401,
- sshd,
- sshj,
- sshlib,
- storage 3.0,
- tera term,
- thrussh,
- tinyssh,
- transmit 5,
- winscp,
- xshell 7
References
Advisory
