{"image_url":null,"blog_url":"https://inaz2.hatenablog.com/","provider_url":"https://hatena.blog","version":"1.0","url":"https://inaz2.hatenablog.com/entry/2015/03/27/021422","description":"\u300cLinux\u30ab\u30fc\u30cd\u30eb\u30e2\u30b8\u30e5\u30fc\u30eb\u3067ret2usr\u306b\u3088\u308b\u6a29\u9650\u6607\u683c\u3092\u3084\u3063\u3066\u307f\u308b\u300d\u3067\u306f\u3001Kernel Address Display Restriction\uff08KADR\uff09\u3092\u7121\u52b9\u306b\u3057\u305f\u4e0a\u3067/proc/kallsyms\u304b\u3089\u30ab\u30fc\u30cd\u30eb\u30b7\u30f3\u30dc\u30eb\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u53d6\u5f97\u3057\u3001\u30ab\u30fc\u30cd\u30eb\u7a7a\u9593\u304b\u3089\u30e6\u30fc\u30b6\u7a7a\u9593\u306e\u95a2\u6570\u3092\u5b9f\u884c\u3055\u305b\u308b\u3053\u3068\u306b\u3088\u308a\u6a29\u9650\u6607\u683c\u3092\u884c\u3063\u305f\uff08ret2usr\uff09\u3002 ret2usr\u306fIntel SMEP\u3067\u9632\u3050\u3053\u3068\u304c\u3067\u304d\u308b\u304c\u3001SMEP\u3092\u56de\u907f\u3059\u308b\u624b\u6cd5\u3068\u3057\u3066Stackjacking\u3068\u547c\u3070\u308c\u308b\u3082\u306e\u304c\u77e5\u3089\u308c\u3066\u3044\u308b\u3002 \u305d\u3053\u3067\u3001\u3053\u3053\u3067\u306fStackjacking\u306b\u3088\u308bSMEP\u56de\u907f\u3092\u3084\u3063\u3066\u307f\u308b\u3002 \u307e\u305f\u3001Stackjacking\u306fSMAP\u304a\u3088\u3073K\u2026","title":" Linux\u30ab\u30fc\u30cd\u30eb\u30e2\u30b8\u30e5\u30fc\u30eb\u3067Stackjacking\u306b\u3088\u308bSMEP+SMAP+KADR\u56de\u907f\u3092\u3084\u3063\u3066\u307f\u308b","author_url":"https://blog.hatena.ne.jp/inaz2/","provider_name":"Hatena Blog","categories":["Exploit"],"height":"190","width":"100%","published":"2015-03-27 02:14:22","author_name":"inaz2","blog_title":"\u3082\u3082\u3044\u308d\u30c6\u30af\u30ce\u30ed\u30b8\u30fc","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Finaz2.hatenablog.com%2Fentry%2F2015%2F03%2F27%2F021422\" title=\" Linux\u30ab\u30fc\u30cd\u30eb\u30e2\u30b8\u30e5\u30fc\u30eb\u3067Stackjacking\u306b\u3088\u308bSMEP+SMAP+KADR\u56de\u907f\u3092\u3084\u3063\u3066\u307f\u308b - \u3082\u3082\u3044\u308d\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","type":"rich"}