{"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\/fr\/blog\/news\/uyazvimost-v-git-privodyashhaya-k-utechke-uchyotnyh-dannyh","title":{"rendered":"Vuln\u00e9rabilit\u00e9 dans Git entra\u00eenant une fuite d'informations d'identification","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Publi\u00e9<\/a><\/noindex> Les mises \u00e0 jour correctives du syst\u00e8me de gestion de version distribu\u00e9 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 et 2.17.4, qui corrigent CVE-2020-10174<\/a><\/noindex> (CVE-2020-5260<\/a><\/noindex>) dans le gestionnaire «credential.helper<\/a><\/noindex>«, ce qui entra\u00eene l'envoi des identifiants vers le mauvais h\u00f4te lorsque le client git acc\u00e8de au d\u00e9p\u00f4t via une URL sp\u00e9cialement formul\u00e9e contenant un caract\u00e8re de nouvelle ligne. Cette vuln\u00e9rabilit\u00e9 peut \u00eatre exploit\u00e9e pour transf\u00e9rer des identifiants vers un serveur contr\u00f4l\u00e9 par l'attaquant \u00e0 partir d'un autre h\u00f4te. <\/p>\n

Lorsque vous indiquez une URL de type «https:\/\/evil.com?host=github.com\/», le gestionnaire d'identifiants lors de la connexion \u00e0 l'h\u00f4te evil.com transmettra les param\u00e8tres d'authentification d\u00e9finis pour github.com. Le probl\u00e8me se manifeste lors de l'ex\u00e9cution d'op\u00e9rations telles que «git clone», y compris le traitement des URL pour les sous-modules (par exemple, lors de l'ex\u00e9cution de «git submodule update», les URL sp\u00e9cifi\u00e9es dans le fichier .gitmodules du d\u00e9p\u00f4t seront automatiquement trait\u00e9es). La vuln\u00e9rabilit\u00e9 est particuli\u00e8rement dangereuse dans des situations o\u00f9 le d\u00e9veloppeur clone un d\u00e9p\u00f4t sans voir l'URL, par exemple lors du travail avec des sous-modules, ou dans des syst\u00e8mes ex\u00e9cutant des actions automatiques, comme dans les scripts de construction de paquets.<\/p>\n

Pour bloquer la vuln\u00e9rabilit\u00e9 dans les nouvelles versions est bloqu\u00e9e<\/a><\/noindex> la transmission du caract\u00e8re de nouvelle ligne dans toutes les valeurs envoy\u00e9es via le protocole d'\u00e9change d'informations d'identification. Pour les distributions, les mises \u00e0 jour des paquets peuvent \u00eatre suivies sur les pages Debian<\/a><\/noindex>, Ubuntu<\/a><\/noindex>, RHEL<\/a><\/noindex>, SUSE\/openSUSE<\/a><\/noindex>, Fedora<\/a><\/noindex>, Arch<\/a><\/noindex>, FreeBSD<\/a><\/noindex>.<\/p>\n

En tant que solution de contournement pour bloquer le probl\u00e8me il est recommand\u00e9<\/a><\/noindex> ne pas utiliser credential.helper lors de l'acc\u00e8s \u00e0 des d\u00e9p\u00f4ts publics et ne pas appliquer «git clone» en mode «—recurse-submodules» avec des d\u00e9p\u00f4ts non v\u00e9rifi\u00e9s. Pour d\u00e9sactiver compl\u00e8tement le gestionnaire credential.helper, qui effectue la sauvegarde<\/a><\/noindex> et la r\u00e9cup\u00e9ration des mots de passe depuis le cache<\/a><\/noindex>, s\u00e9curis\u00e9 par un stockage<\/a><\/noindex> ou un fichier de mots de passe, vous pouvez utiliser les commandes :<\/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

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

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