CVSS: 5.9EPSS: 96%CPEs: 79EXPL: 1CVE-2023-48795 – ssh: Prefix truncation attack on Binary Packet Protocol (BPP)
https://notcve.org/view.php?id=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. • http://packetstormsecurity.com/files/176280/Terrapin-SSH-Connection-Weakening.html http://seclists.org/fulldisclosure/2024/Mar/21 http://www.openwall.com/lists/oss-security/2023/12/18/3 http://www.openwall.com/lists/oss-security/2023/12/19/5 http://www.openwall.com/lists/oss-security/2023/12/20/3 http://www.openwall.com/lists/oss-security/2024/03/06/3 http://www.openwall.com/lists/oss-security/2024/04/17/8 https://access.redhat.com/security/cve/cve-2023-48 • CWE-222: Truncation of Security-relevant Information CWE-354: Improper Validation of Integrity Check Value •
CVSS: 6.8EPSS: 0%CPEs: 1EXPL: 0CVE-2023-46446 – Terrapin SSH Connection Weakening
https://notcve.org/view.php?id=CVE-2023-46446
An issue in AsyncSSH before 2.14.1 allows attackers to control the remote end of an SSH client session via packet injection/removal and shell emulation, aka a "Rogue Session Attack." Un problema en AsyncSSH v2.14.0 y versiones anteriores permite a los atacantes controlar el final remoto de una sesión de cliente SSH mediante inyección/eliminación de paquetes y emulación de shell. • http://packetstormsecurity.com/files/176280/Terrapin-SSH-Connection-Weakening.html https://github.com/advisories/GHSA-c35q-ffpf-5qpm https://github.com/ronf/asyncssh/blob/develop/docs/changes.rst https://github.com/ronf/asyncssh/security/advisories/GHSA-c35q-ffpf-5qpm https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ME34ROZWMDK5KLMZKTSA422XVJZ7IMTE https://security.netapp.com/advisory/ntap-20231222-0001 https://www.terrapin-attack.com • CWE-639: Authorization Bypass Through User-Controlled Key •
CVSS: 5.9EPSS: 0%CPEs: 1EXPL: 0CVE-2023-46445 – Terrapin SSH Connection Weakening
https://notcve.org/view.php?id=CVE-2023-46445
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." Un problema en AsyncSSH v2.14.0 y versiones anteriores permite a los atacantes controlar el mensaje de información de la extensión (RFC 8308) mediante un ataque de intermediario. • http://packetstormsecurity.com/files/176280/Terrapin-SSH-Connection-Weakening.html https://github.com/advisories/GHSA-cfc2-wr2v-gxm5 https://github.com/ronf/asyncssh/blob/develop/docs/changes.rst https://github.com/ronf/asyncssh/security/advisories/GHSA-cfc2-wr2v-gxm5 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ME34ROZWMDK5KLMZKTSA422XVJZ7IMTE https://security.netapp.com/advisory/ntap-20231222-0001 https://www.terrapin-attack.com • CWE-345: Insufficient Verification of Data Authenticity •
CVSS: 9.8EPSS: 0%CPEs: 1EXPL: 0CVE-2018-7749
https://notcve.org/view.php?id=CVE-2018-7749
The SSH server implementation of AsyncSSH before 1.12.1 does not properly check whether authentication is completed before processing other requests. A customized SSH client can simply skip the authentication step. La implementación del servidor SSH en AsyncSSH, en versiones anteriores a la 1.12.1, no comprueba adecuadamente si la autenticación se completa antes de procesar otras peticiones. Un cliente SSH personalizado puede simplemente omitir el paso de autenticación. • https://github.com/ronf/asyncssh/commit/c161e26cdc0d41b745b63d9f17b437f073bf7ba4 https://groups.google.com/forum/#%21msg/asyncssh-announce/57_5O7kiHSA/8BXZ_hxHAQAJ • CWE-287: Improper Authentication •