{"id":77984,"date":"2020-04-15T07:42:14","date_gmt":"2020-04-15T05:42:14","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-git-privodyashhaya-k-utechke-uchyotnyh-dannyh"},"modified":"2020-04-15T07:42:14","modified_gmt":"2020-04-15T05:42:14","slug":"uyazvimost-v-git-privodyashhaya-k-utechke-uchyotnyh-dannyh","status":"publish","type":"post","link":"https:\/\/prohoster.info\/es\/blog\/news\/uyazvimost-v-git-privodyashhaya-k-utechke-uchyotnyh-dannyh","title":{"rendered":"Vulnerabilidad en Git que conduce a la filtraci\u00f3n de credenciales","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Publicado<\/a><\/noindex> versiones corregidas del sistema de control de versiones distribuido Git 2.26.1, 2.25.3, 2.24.2, 2.23.2, 2.22.3, 2.21.2, 2.20.3, 2.19.4, 2.18.3 y 2.17.4, en las que se ha solucionado vulnerabilidad<\/a><\/noindex> (CVE-2020-5260<\/a><\/noindex>) en el manejador «credential.helper<\/a><\/noindex>«, que lleva a enviar credenciales a un host incorrecto cuando el cliente git accede a un repositorio a trav\u00e9s de una URL especialmente formada que contiene un s\u00edmbolo de nueva l\u00ednea. Esta vulnerabilidad se puede utilizar para enviar credenciales de otro host a un servidor controlado por el atacante. <\/p>\n

Al especificar una URL del tipo «https:\/\/evil.com?host=github.com\/», el manejador de credenciales al conectarse al host evil.com transmitir\u00e1 los par\u00e1metros de autenticaci\u00f3n establecidos para github.com. El problema se manifiesta al realizar operaciones como «git clone», incluyendo el procesamiento de URLs para subm\u00f3dulos (por ejemplo, al ejecutar «git submodule update» se procesar\u00e1n autom\u00e1ticamente las URLs especificadas en el archivo .gitmodules del repositorio). La vulnerabilidad es m\u00e1s peligrosa en situaciones donde el desarrollador clona un repositorio sin ver la URL, como al trabajar con subm\u00f3dulos, o en sistemas que realizan acciones autom\u00e1ticas, como en scripts de construcci\u00f3n de paquetes.<\/p>\n

Para bloquear la vulnerabilidad en las nuevas versiones prohibida<\/a><\/noindex> la transmisi\u00f3n de s\u00edmbolos de nueva l\u00ednea en cualquier valor que se env\u00ede a trav\u00e9s del protocolo de intercambio de credenciales. Para las distribuciones, se puede verificar el lanzamiento de actualizaciones de paquetes en las p\u00e1ginas Debian<\/a><\/noindex>, Ubuntu<\/a><\/noindex>, RHEL<\/a><\/noindex>, SUSE\/openSUSE<\/a><\/noindex>, Fedora<\/a><\/noindex>, Arch<\/a><\/noindex>, FreeBSD<\/a><\/noindex>.<\/p>\n

Como soluci\u00f3n provisional para bloquear el problema se recomienda<\/a><\/noindex> no utilizar credential.helper al acceder a repositorios p\u00fablicos y no aplicar «git clone» en modo «—recurse-submodules» con repositorios no verificados. Para deshabilitar completamente el manejador credential.helper, que realiza la conservaci\u00f3n<\/a><\/noindex> y recuperaci\u00f3n de contrase\u00f1as de la cach\u00e9<\/a><\/noindex>, protegido almac\u00e9n<\/a><\/noindex> o archivo de contrase\u00f1as, se pueden utilizar los comandos:<\/p>\n

git config —unset credential.helper
\n git config —global —unset credential.helper
\n git config —system —unset credential.helper<\/p>\n

<\/a><\/noindex><\/p>\n

Fuente: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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[…]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-77984","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47 Vulnerabilidad en Git que provoca la filtraci\u00f3n de credenciales | ProHoster","description":"Se han publicado versiones corregidas del sistema de control de versiones distribuido Git 2.26.1, 2.25.3, 2.24.2, 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