CVE-2024-50349
Git does not sanitize URLs when asking for credentials interactively
En resumen
Git no sanitiza las URLs al pedir credenciales de forma interactiva, permitiendo que atacantes utilicen secuencias ANSI para engañar a usuarios y hacerlos ingresar contraseñas para sitios falsos. Esto puede provocar que usuarios revelen credenciales a sistemas no confiables.
Detalle técnico
Cuando Git solicita credenciales mediante prompt de terminal sin usar un gestor de credenciales, los caracteres decodificados de URL y las secuencias ANSI se imprimen literalmente, permitiendo que atacantes creen URLs maliciosas que manipulen la salida del terminal para suplantar sitios confiables. El ataque requiere interacción del usuario con URLs de repositorio no confiables.
Resumen generado y traducido por IA a partir de la descripción oficial.
Git is a fast, scalable, distributed revision control system with an unusually rich command set that provides both high-level operations and full access to internals. When Git asks for credentials via a terminal prompt (i.e. without using any credential helper), it prints out the host name for which the user is expected to provide a username and/or a password. At this stage, any URL-encoded parts have been decoded already, and are printed verbatim. This allows attackers to craft URLs that contain ANSI escape sequences that the terminal interpret to confuse users e.g. into providing passwords for trusted Git hosting sites when in fact they are then sent to untrusted sites that are under the attacker's control. This issue has been patch via commits `7725b81` and `c903985` which are included in release versions v2.48.1, v2.47.2, v2.46.3, v2.45.3, v2.44.3, v2.43.6, v2.42.4, v2.41.3, and v2.40.4. Users are advised to upgrade. Users unable to upgrade should avoid cloning from untrusted URLs, especially recursive clones.
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N
Productos afectados
git · git¿Quieres saber si tu infraestructura está expuesta a esto?
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