CVSS: 8.1EPSS: 83%CPEs: 54EXPL: 99CVE-2024-6387 – Openssh: regresshion - race condition in ssh allows rce/dos
https://notcve.org/view.php?id=CVE-2024-6387
01 Jul 2024 — A security regression (CVE-2006-5051) was discovered in OpenSSH's server (sshd). There is a race condition which can lead sshd to handle some signals in an unsafe manner. An unauthenticated, remote attacker may be able to trigger it by failing to authenticate within a set time period. Se encontró una condición de ejecución del controlador de señales en el servidor de OpenSSH (sshd), donde un cliente no se autentica dentro de los segundos de LoginGraceTime (120 de forma predeterminada, 600 en versiones anter... • https://packetstorm.news/files/id/179290 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE-364: Signal Handler Race Condition •
CVSS: 6.5EPSS: 49%CPEs: 4EXPL: 20CVE-2023-51385 – openssh: potential command injection via shell metacharacters
https://notcve.org/view.php?id=CVE-2023-51385
18 Dec 2023 — In ssh in OpenSSH before 9.6, OS command injection might occur if a user name or host name has shell metacharacters, and this name is referenced by an expansion token in certain situations. For example, an untrusted Git repository can have a submodule with shell metacharacters in a user name or host name. En ssh en OpenSSH anterior a 9.6, la inyección de comandos del sistema operativo puede ocurrir si un nombre de usuario o nombre de host tiene metacaracteres de shell, y un token de expansión hace referenci... • https://github.com/WOOOOONG/CVE-2023-51385 • CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') •
CVSS: 5.5EPSS: 0%CPEs: 3EXPL: 0CVE-2023-51384 – Apple Security Advisory 03-07-2024-2
https://notcve.org/view.php?id=CVE-2023-51384
18 Dec 2023 — In ssh-agent in OpenSSH before 9.6, certain destination constraints can be incompletely applied. When destination constraints are specified during addition of PKCS#11-hosted private keys, these constraints are only applied to the first key, even if a PKCS#11 token returns multiple keys. En ssh-agent en OpenSSH anterior a 9.6, ciertas restricciones de destino se pueden aplicar de forma incompleta. Cuando se especifican restricciones de destino durante la adición de claves privadas alojadas en PKCS#11, estas ... • http://seclists.org/fulldisclosure/2024/Mar/21 •
CVSS: 5.9EPSS: 67%CPEs: 79EXPL: 3CVE-2023-48795 – ssh: Prefix truncation attack on Binary Packet Protocol (BPP)
https://notcve.org/view.php?id=CVE-2023-48795
18 Dec 2023 — 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 phas... • https://packetstorm.news/files/id/176280 • CWE-222: Truncation of Security-relevant Information CWE-354: Improper Validation of Integrity Check Value •
CVSS: 10.0EPSS: 45%CPEs: 5EXPL: 11CVE-2023-38408 – openssh: Remote code execution in ssh-agent PKCS#11 support
https://notcve.org/view.php?id=CVE-2023-38408
20 Jul 2023 — The PKCS#11 feature in ssh-agent in OpenSSH before 9.3p2 has an insufficiently trustworthy search path, leading to remote code execution if an agent is forwarded to an attacker-controlled system. (Code in /usr/lib is not necessarily safe for loading into ssh-agent.) NOTE: this issue exists because of an incomplete fix for CVE-2016-10009. La característica PKCS#11 en ssh-agent en OpenSSH anterior a 9.3p2 tiene una ruta de búsqueda insuficientemente confiable, lo que lleva a la ejecución remota de código si u... • https://packetstorm.news/files/id/173661 • CWE-94: Improper Control of Generation of Code ('Code Injection') CWE-428: Unquoted Search Path or Element •
CVSS: 10.0EPSS: 2%CPEs: 4EXPL: 0CVE-2023-28531 – Gentoo Linux Security Advisory 202307-01
https://notcve.org/view.php?id=CVE-2023-28531
17 Mar 2023 — ssh-add in OpenSSH before 9.3 adds smartcard keys to ssh-agent without the intended per-hop destination constraints. The earliest affected version is 8.9. Fabian Bäumer, Marcus Brinkmann, Joerg Schwenk discovered that the SSH protocol was vulnerable to a prefix truncation attack. If a remote attacker was able to intercept SSH communications, extension negotiation messages could be truncated, possibly leading to certain algorithms and features being downgraded. This issue is known as the Terrapin attack. • https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AN2UDTXEUSKFIOIYMV6JNI5VSBMYZOFT •
CVSS: 6.5EPSS: 90%CPEs: 10EXPL: 13CVE-2023-25136 – openssh: the functions order_hostkeyalgs() and list_hostkey_types() leads to double-free vulnerability
https://notcve.org/view.php?id=CVE-2023-25136
03 Feb 2023 — OpenSSH server (sshd) 9.1 introduced a double-free vulnerability during options.kex_algorithms handling. This is fixed in OpenSSH 9.2. The double free can be leveraged, by an unauthenticated remote attacker in the default configuration, to jump to any location in the sshd address space. One third-party report states "remote code execution is theoretically possible." OpenSSH server (sshd) v9.1 introdujo una vulnerabilidad de doble liberación durante el manejo de "options.key_algorithms". • https://github.com/Christbowel/CVE-2023-25136 • CWE-401: Missing Release of Memory after Effective Lifetime CWE-415: Double Free •