{"id":1021,"date":"2022-11-07T08:39:42","date_gmt":"2022-11-07T13:39:42","guid":{"rendered":"https:\/\/www.searchevolution.com\/security\/?p=1021"},"modified":"2022-11-07T08:39:42","modified_gmt":"2022-11-07T13:39:42","slug":"outrepasser-la-protection-2fa","status":"publish","type":"post","link":"https:\/\/www.searchevolution.com\/security\/2022\/11\/07\/outrepasser-la-protection-2fa\/","title":{"rendered":"Outrepasser la protection 2FA"},"content":{"rendered":"

Pour v\u00e9rifier la vuln\u00e9rabilit\u00e9 d’un service pour une faille 2FA, il y a plusieurs techniques<\/p>\n

1. Manipulation de la r\u00e9ponse du serveur : dans la r\u00e9ponse, if \u00ab\u00a0success\u00a0\u00bb:false , changer en \u00ab\u00a0success\u00a0\u00bb:true<\/p>\n

2. Manipuler le code de status : si le code de statut est 4XX, essayer un code 200 OK et regarder si cela permet de r\u00e9ussit<\/p>\n

3. Fuite de code 2FA: v\u00e9rifier si le code 2FA est dans la r\u00e9ponse du serveur<\/p>\n

4. Analyse des fichiers JS : Il peut arriver que les fichiers javascript contiennent de l’information sur le code 2FA (plut\u00f4t rare)<\/p>\n

5. R\u00e9utilisation d’un code 2FA: Parfois le code peut \u00eatre r\u00e9utilis\u00e9<\/p>\n

6. pas de protection contre la force brute : Possible de forcer un code 2FA d’une longueur quelconque<\/p>\n

7. pas de v\u00e9rification de l’int\u00e9grit\u00e9 d’un code 2FA : Le code 2FA d’un usager peut \u00eatre utilis\u00e9 comme code 2FA d’une victime<\/p>\n

8. CSRF sur la d\u00e9sactivation de la s\u00e9curit\u00e9 2FA: pas de protection CSRF lors de la d\u00e9sactivation 2FA. Aussi pas de confirmation auth<\/p>\n

9. Changement de mot de passe d\u00e9sactive le 2FA : 2FA est d\u00e9sactivi\u00e9 lors d’un changement de courriel ou mot de passe<\/p>\n

10. Outrepasser 2FA avec la valeur null ou 000000 : entrer le code 000000 ou null pour d\u00e9jouer la protection 2FA<\/p>\n","protected":false},"excerpt":{"rendered":"

Pour v\u00e9rifier la vuln\u00e9rabilit\u00e9 d’un service pour une faille 2FA, il y a plusieurs techniques 1. Manipulation de la r\u00e9ponse du serveur : dans la r\u00e9ponse, if \u00ab\u00a0success\u00a0\u00bb:false , changer en \u00ab\u00a0success\u00a0\u00bb:true 2. Manipuler le code de status : si le code de statut est 4XX, essayer un code 200 OK et regarder si cela permet de r\u00e9ussit 3. Fuite de code 2FA: v\u00e9rifier si le code 2FA est dans la r\u00e9ponse du serveur 4. Analyse des fichiers JS : Il peut arriver que les fichiers javascript contiennent de l’information sur le code 2FA (plut\u00f4t rare) 5. R\u00e9utilisation d’un code <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1021","post","type-post","status-publish","format-standard","hentry","category-non-classe"],"yoast_head":"\nOutrepasser la protection 2FA - S\u00e9curiser votre site<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.searchevolution.com\/security\/2022\/11\/07\/outrepasser-la-protection-2fa\/\" \/>\n<meta property=\"og:locale\" content=\"fr_CA\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Outrepasser la protection 2FA - S\u00e9curiser votre site\" \/>\n<meta property=\"og:description\" content=\"Pour v\u00e9rifier la vuln\u00e9rabilit\u00e9 d’un service pour une faille 2FA, il y a plusieurs techniques 1. Manipulation de la r\u00e9ponse du serveur : dans la r\u00e9ponse, if \u00ab\u00a0success\u00a0\u00bb:false , changer en \u00ab\u00a0success\u00a0\u00bb:true 2. Manipuler le code de status : si le code de statut est 4XX, essayer un code 200 OK et regarder si cela permet de r\u00e9ussit 3. Fuite de code 2FA: v\u00e9rifier si le code 2FA est dans la r\u00e9ponse du serveur 4. Analyse des fichiers JS : Il peut arriver que les fichiers javascript contiennent de l’information sur le code 2FA (plut\u00f4t rare) 5. 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