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: 7.8EPSS: 0%CPEs: 4EXPL: 1CVE-2022-23220
https://notcve.org/view.php?id=CVE-2022-23220
USBView 2.1 before 2.2 allows some local users (e.g., ones logged in via SSH) to execute arbitrary code as root because certain Polkit settings (e.g., allow_any=yes) for pkexec disable the authentication requirement. Code execution can, for example, use the --gtk-module option. This affects Ubuntu, Debian, and Gentoo. USBView versiones 2.1 anteriores a 2.2, permite a algunos usuarios locales (por ejemplo, los que son conectados por SSH) ejecutar código arbitrario como root porque determinadas configuraciones de Polkit (por ejemplo, allow_any=yes) para pkexec deshabilitan el requisito de autenticación. Una ejecución de código puede, por ejemplo, usar la opción --gtk-module. • http://www.openwall.com/lists/oss-security/2022/01/22/1 https://github.com/gregkh/usbview/commit/bf374fa4e5b9a756789dfd88efa93806a395463b https://security.gentoo.org/glsa/202310-15 https://www.debian.org/security/2022/dsa-5052 https://www.openwall.com/lists/oss-security/2022/01/21/1 • CWE-306: Missing Authentication for Critical Function •
CVSS: 7.1EPSS: 0%CPEs: 2EXPL: 0CVE-2017-18284
https://notcve.org/view.php?id=CVE-2017-18284
The Gentoo app-backup/burp package before 2.1.32 sets the ownership of the PID file directory to the burp account, which might allow local users to kill arbitrary processes by leveraging access to this account for PID file modification before a root script sends a SIGKILL. El paquete app-backup/burp de Gentoo, en versiones anteriores a la 2.1.32, establece la propiedad del directorio de archivos PID en la cuenta burp, lo que podría permitir que usuarios locales finalicen procesos arbitrarios aprovechando el acceso a esta cuenta para modificar archivos PID antes de que un script root envíe un SIGKILL. • https://bugs.gentoo.org/628770 https://security.gentoo.org/glsa/201806-03 • CWE-732: Incorrect Permission Assignment for Critical Resource •
CVSS: 7.1EPSS: 0%CPEs: 2EXPL: 0CVE-2017-18285
https://notcve.org/view.php?id=CVE-2017-18285
The Gentoo app-backup/burp package before 2.1.32 has incorrect group ownership of the /etc/burp directory, which might allow local users to obtain read and write access to arbitrary files by leveraging access to a certain account for a burp-server.conf change. El paquete app-backup/burp de Gentoo, en versiones anteriores a la 2.1.32, tiene la propiedad incorrecta del directorio /etc/burp, que podría permitir que usuarios locales obtengan acceso de lectura y escritura a archivos arbitrarios aprovechando el acceso a cierta cuenta para un cambio en burp-server.conf. • https://bugs.gentoo.org/641842 https://security.gentoo.org/glsa/201806-03 https://security.gentoo.org/glsa/201904-05 • CWE-732: Incorrect Permission Assignment for Critical Resource •
CVSS: 7.8EPSS: 0%CPEs: 2EXPL: 0CVE-2017-18225
https://notcve.org/view.php?id=CVE-2017-18225
The Gentoo net-im/jabberd2 package through 2.6.1 installs jabberd, jabberd2-c2s, jabberd2-router, jabberd2-s2s, and jabberd2-sm in /usr/bin owned by the jabber account, which might allow local users to gain privileges by leveraging access to this account and then waiting for root to execute one of these programs. El paquete net-im/jabberd2 de Gentoo, hasta la versión 2.6.1, instala jabberd, jabberd2-c2s, jabberd2-router, jabberd2-s2s y jabberd2-sm en /usr/bin, propiedad de la cuenta jabber. Esto podría permitir que usuarios locales obtengan privilegios aprovechando el acceso a esta cuenta y esperando a que root ejecute uno de estos programas. • https://bugs.gentoo.org/629412 • CWE-732: Incorrect Permission Assignment for Critical Resource •