{"title":"JWT authentication bypass via jku header injection\u3092\u3084\u3063\u3066\u307f\u305f","categories":["PortSwigger"],"width":"100%","description":"Hello there, ('\u03c9')\u30ce jku\u30d8\u30c3\u30c0\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\u306b\u3088\u308bJWT\u8a8d\u8a3c\u30d0\u30a4\u30d1\u30b9\u3092\u3002 JWT \u30d9\u30fc\u30b9\u306e\u30e1\u30ab\u30cb\u30ba\u30e0\u3092\u4f7f\u7528\u3057\u3066\u30bb\u30c3\u30b7\u30e7\u30f3\u3092\u51e6\u7406\u3057\u3002 \u30b5\u30fc\u30d0\u306f\u3001JWT \u30d8\u30c3\u30c0\u306e jku \u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u3066\u3002 \u305f\u3060\u3057\u3001\u30ad\u30fc\u3092\u53d6\u5f97\u3059\u308b\u524d\u306b\u3001\u63d0\u4f9b\u3055\u308c\u305f URL \u304c\u4fe1\u983c\u3067\u304d\u308b\u30c9\u30e1\u30a4\u30f3\u306b \u5c5e\u3057\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3067\u304d\u305a\u3002 /admin \u3067\u7ba1\u7406\u30d1\u30cd\u30eb\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b JWT \u3092\u507d\u9020\u3057carlos \u3092\u524a\u9664\u3057\u3066\u3002 \u6b21\u306e\u8a8d\u8a3c\u60c5\u5831\u3092\u4f7f\u7528\u3057\u3066\u3001\u81ea\u5206\u306e\u30a2\u30ab\u30a6\u30f3\u30c8\u306b\u30ed\u30b0\u30a4\u30f3\u3067\u304d\u3066\u3002 wiener\uff0fpeter \u307e\u305a\u306f\u3001\u30ed\u30b0\u30a4\u30f3\u3057\u3066\u3002 \u5bfe\u8c61\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u30ea\u30d4\u30fc\u30bf\u3078\u3002 \u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u3092/admin\u2026","provider_url":"https://hatena.blog","version":"1.0","author_url":"https://blog.hatena.ne.jp/ThisIsOne/","blog_url":"https://cysec148.hatenablog.com/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fcysec148.hatenablog.com%2Fentry%2F2023%2F05%2F09%2F154131\" title=\"JWT authentication bypass via jku header injection\u3092\u3084\u3063\u3066\u307f\u305f - Shikata Ga Nai\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/T/ThisIsOne/20230509/20230509151541.png","provider_name":"Hatena Blog","type":"rich","url":"https://cysec148.hatenablog.com/entry/2023/05/09/154131","height":"190","published":"2023-05-09 15:41:31","blog_title":"Shikata Ga Nai","author_name":"ThisIsOne"}