{"blog_url":"https://cysec148.hatenablog.com/","url":"https://cysec148.hatenablog.com/entry/2021/02/27/173544","author_name":"ThisIsOne","author_url":"https://blog.hatena.ne.jp/ThisIsOne/","provider_url":"https://hatena.blog","version":"1.0","provider_name":"Hatena Blog","width":"100%","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fcysec148.hatenablog.com%2Fentry%2F2021%2F02%2F27%2F173544\" title=\"File path traversal, validation of file extension with null byte bypass\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>","categories":["PortSwigger"],"published":"2021-02-27 17:35:44","blog_title":"Shikata Ga Nai","type":"rich","title":"File path traversal, validation of file extension with null byte bypass\u3092\u3084\u3063\u3066\u307f\u305f","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/T/ThisIsOne/20210227/20210227172612.png","height":"190","description":"Hello there, ('\u03c9')\u30ce \u30cc\u30eb\u30d0\u30a4\u30c8\u30d0\u30a4\u30d1\u30b9\u3092\u4f7f\u7528\u3057\u305f\u30d5\u30a1\u30a4\u30eb\u62e1\u5f35\u5b50\u306e\u691c\u8a3c\u3092\u3002 \u8a73\u7d30\u3092\u9078\u629e\u3057\u3066\u3002 \u4e0b\u8a18\u306e\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u5165\u529b\u3059\u308b\u3068\u30a8\u30e9\u30fc\u304c\u3002 ../../../etc/passwd \u3055\u3089\u306b\u4e0b\u8a18\u306e\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u5165\u529b\u3057\u3066\u3082\u30a8\u30e9\u30fc\u304c\u3002 ../../../etc/passwd.png \u4e0b\u8a18\u306e\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u5165\u529b\u3057\u3066Send\u3059\u308b\u3068\u3002 ../../../etc/passwd%00.png \u30af\u30ea\u30a2\u3067\u304d\u305f\u3002 \u3053\u308c\u306f\u3001\u30cc\u30eb\u30d0\u30a4\u30c8\u30dd\u30a4\u30ba\u30f3\u3067\u3002 \u30e6\u30fc\u30b6\u306b\u30d5\u30a1\u30a4\u30eb\u306e\u63d0\u4f9b\u3092\u8a31\u53ef\u3059\u308b\u5834\u5408\u306f\u3001\u5909\u6570$file\u3078\u306e\u30e6\u30fc\u30b6\u5165\u529b\u3092\u8aad\u307f\u53d6\u3063\u3066\u3002 \u8a31\u53ef\u3055\u308c\u3066\u3044\u306a\u3044\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304b\u306a\u3044\u3088\u3046\u306b\u30d5\u30a1\u30a4\u30eb\u62e1\u5f35\u5b50\u3092\u4f7f\u7528\u3057\u3088\u3046\u3068\u3057\u3066\u3002 open\u2026"}