{"id":1835,"date":"2017-03-22T02:41:07","date_gmt":"2017-03-22T02:41:07","guid":{"rendered":"https:\/\/www.inforsec.org\/wp\/?p=1835"},"modified":"2017-03-27T07:03:26","modified_gmt":"2017-03-27T07:03:26","slug":"ssltls%e7%9a%84%e8%bf%91%e5%b9%b4%e7%9b%b8%e5%85%b3%e6%94%bb%e5%87%bb%e7%a0%94%e7%a9%b6%e7%bb%bc%e8%bf%b0%ef%bc%88%e4%ba%8c%ef%bc%89","status":"publish","type":"post","link":"http:\/\/202.112.238.40\/wp\/?p=1835","title":{"rendered":"SSL\/TLS\u7684\u8fd1\u5e74\u76f8\u5173\u653b\u51fb\u7814\u7a76\u7efc\u8ff0\uff08\u4e8c\uff09"},"content":{"rendered":"<h3 style=\"text-align: center;\"><strong>SSL\/TLS\u7684\u8fd1\u5e74\u76f8\u5173\u653b\u51fb\u7814\u7a76\u7efc\u8ff0\uff08\u4e8c\uff09<\/strong><\/h3>\n<h3 style=\"text-align: center;\"><strong>\u534f\u8bae\u8bbe\u8ba1\u4e0d\u8db3\u7684\u6f0f\u6d1e (\u57fa\u4e8eCBC\u3000padding\u00a0\u7684\u653b\u51fb)<\/strong><\/h3>\n<p>\u4f5c\u8005\uff1a\u97e6\u4fca\u7433 \uff08\u6e05\u534e\u5927\u5b66\uff09<\/p>\n<p><strong><b>\u7b80\u4ecb\uff1a<\/b><\/strong><\/p>\n<p>SSL\/TLS\u5728\u534f\u8bae\u8bbe\u8ba1\u65b9\u9762\uff0c\u5b58\u5728\u4e00\u4e9b\u5f31\u70b9\uff0c\u53ef\u4ee5\u88ab\u5229\u7528\u3002\u672c\u6587\u7efc\u5408\u4ecb\u7ecdSSL\/TLS\u4f7f\u7528CBC\u52a0\u5bc6\u6a21\u5f0f\u65f6\uff0c\u53ef\u80fd\u4ea7\u751f\u7684\u653b\u51fb\u3002 \u6211\u4eec\u9996\u5148\u7b80\u5355\u4ecb\u7ecdCBC\u52a0\u5bc6\u6a21\u5f0f\u7684\u5de5\u4f5c\u539f\u7406\u3002\u7136\u540e\u4ecb\u7ecd\u57fa\u4e8eCBC\u00a0padding\u7684\u76f8\u5173\u653b\u51fb\uff0c\u5305\u62ecLucky Thirteen \u653b\u51fb\uff0cPOODLE \u653b\u51fb\uff0cBleichenbacher \u653b\u51fb\uff0c\u548cDROWN \u653b\u51fb\u3002<\/p>\n<p><!--more--><\/p>\n<p>\u5728SSL\u534f\u8bae\u8f83\u65e9\u7684\u7248\u672c\u4e2d\uff0c\u5927\u91cf\u4f7f\u7528CBC\u5206\u7ec4\u52a0\u5bc6\u7684\u6a21\u5f0f\u5bf9\u6570\u636e\u52a0\u5bc6\uff0c\u5982\u56fe2.1\u6240\u793a\uff0c\u52a0\u5bc6\u89e3\u5bc6\u8fc7\u7a0b\u90fd\u662f\u5206\u5757\u8fdb\u884c\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u5f53\u660e\u6587\u6700\u540e\u4e00\u5757\u5185\u5bb9\u4e0d\u8db3\u65f6\uff0c\u4f1a\u8fdb\u884c\u586b\u5145\u3002\u6839\u636e\u586b\u5145\u7684\u5185\u5bb9\uff0cSerge\u00a0Vaudenay\u5728[1]\u4e2d\u5f15\u5165\u4e86padding attack\uff0c\u4ece\u7406\u8bba\u4e0a\u8bc1\u660e\u4e86\u5229\u7528\u586b\u5145\u5185\u5bb9\u8fdb\u884c\u653b\u51fb\u7684\u53ef\u80fd\u6027\uff0c\u9610\u8ff0\u4e86\u5728SSL\/TLS\u3001IPSEC\u3001WTLS\u548cSSH2\u4e2d\u4f7f\u7528CBC\u6a21\u5f0f\u5177\u6709\u4e25\u91cd\u7684\u5b89\u5168\u9690\u60a3\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1836 size-large\" src=\"https:\/\/www.inforsec.org\/wp\/wp-content\/uploads\/2017\/03\/\u56fe\u72471-2-1024x1004.png\" alt=\"\" width=\"800\" height=\"784\" \/><\/p>\n<p style=\"text-align: center;\">\u56fe1 CBC \u6a21\u5f0f\u52a0\u5bc6\u89e3\u5bc6<\/p>\n<p>CBC\u6a21\u5f0f\u4e0b\uff0c\u660e\u6587\u4f1a\u88ab\u5206\u5272\u4e3a\u56fa\u5b9a\u5927\u5c0f\u7684\u5757\u3002\u5982\u679c\u660e\u6587\u5185\u5bb9\u6700\u540e\u4e00\u5757\u4e0d\u8db3\u6574\u5757\u5927\u5c0f\uff0c\u6839\u636ePKCS#5 [2][3]\uff0c\u4f1a\u5728\u6700\u540e\u4e00\u5757\u4e2d\u8fdb\u884c\u586b\u5145\uff0c\u6784\u6210\u5b8c\u6574\u7684\u5757\uff1b\u5982\u679c\u521a\u597d\u5177\u6709\u5757\u5927\u5c0f\uff0c\u5219\u586b\u5145\u4e00\u4e2a\u6574\u5757\u3002CBC\u6a21\u5f0f\u52a0\u5bc6\u901a\u8fc7\u5757\u5bc6\u94a5\u548c\u521d\u59cb\u5411\u91cf\u6765\u52a0\u5bc6\u660e\u6587\u5757\uff0c\u5176\u4e2d\u660e\u6587\u7684\u6bcf\u4e2a\u5757\u90fd\u4f1a\u548c\u5148\u524d\u7684\u5bc6\u6587\u5757\u8fdb\u884c\u5f02\u6216\u8fd0\u7b97\uff0c\u6bcf\u4e2a\u5b57\u7b26\u53ea\u548c\u6bcf\u4e2a\u5757\u7684\u5bf9\u5e94\u4f4d\u7f6e\u76f8\u5173\u3002\u4e3a\u4e86\u4fdd\u8bc1\u5bf9\u540c\u4e00\u660e\u6587\u52a0\u5bc6\u540e\u7684\u5bc6\u6587\u4e0d\u540c\uff0c\u5176\u521d\u59cb\u5411\u91cf\u901a\u5e38\u662f\u968f\u673a\u751f\u6210\u7684\u3002<\/p>\n<p>\u8fdb\u884c\u5bc6\u6587\u89e3\u5bc6\u65f6\u4e5f\u662f\u5206\u6bb5\u8fdb\u884c\u7684\uff0c\u89e3\u5bc6\u5b8c\u6210\u4e4b\u540e\u901a\u5e38\u4f1a\u68c0\u67e5\u662f\u5426\u7b26\u5408\u89c4\u5219\uff0c\u5982\u679c\u4e0d\u7b26\u5408\uff0c\u5219\u4f1a\u629b\u51faPadding error\u5f02\u5e38\uff0c\u63d0\u793a\u586b\u5145\u4e0d\u6b63\u786e\u3002\u5982\u679c\u653b\u51fb\u8005\u83b7\u5f97\u4e86\u5408\u6cd5\u7684\u5bc6\u6587\uff0c\u53ef\u4ee5\u901a\u8fc7\u4e0d\u65ad\u7684\u5411\u670d\u52a1\u5668\u53d1\u9001\u7be1\u6539\u7684\u4fe1\u606f\uff0c\u901a\u8fc7\u89c2\u5bdf\u670d\u52a1\u5668\u8fd4\u56de\u7684\u4fe1\u606f\uff0c\u5373\u53ef\u77e5\u9053\u6784\u9020\u5185\u5bb9\u662f\u5426\u6b63\u786e\u3002\u5982\u679c\u6536\u5230\u9519\u8bef\u63d0\u793a\u4fe1\u606f\uff0c\u5219\u518d\u8fdb\u884c\u4fee\u6539\uff0c\u4ece\u67e5\u8be2\u4e2d\uff0c\u8bd5\u63a2\u51faIV\u7684\u5185\u5bb9\uff0c\u7136\u540e\u901a\u8fc7\u4e2d\u95f4\u5bc6\u6587\u9006\u5411\u89e3\u6790\u53ef\u4ee5\u5f97\u5230\u660e\u6587\u3002\u5f53\u7136\u8fd9\u6837\u505a\u9700\u8981\u505a\u5927\u91cf\u7684\u67e5\u8be2\uff0c\u5728\u4e00\u822c\u7684\u60c5\u51b5\u4e0b\uff0c\u653b\u51fb\u8fd8\u662f\u5f88\u96be\u6210\u7acb\u7684\u3002\u5f53\u5229\u7528\u586b\u5145\u5185\u5bb9\u7684\u7279\u6027\u65f6\uff0c\u653b\u51fb\u5c31\u4f1a\u53d8\u5f97\u9ad8\u6548\u5f88\u591a\u3002\u5982lucky thirteen\uff0cPOODLE\u00a0attack\u00a0\u7b49\u90fd\u5229\u7528\u4e86padding\u5185\u5bb9\u7684\u7279\u6027\u6765\u63d0\u9ad8\u653b\u51fb\u7684\u6548\u7387\uff0c\u4f7f\u653b\u51fb\u5177\u6709\u66f4\u5f3a\u7684\u5b9e\u7528\u6027\u3002<\/p>\n<h2><strong><b>Lucky Thirteen <\/b><\/strong><strong><b>\u653b<\/b><\/strong><strong><b>\u51fb<\/b><\/strong><\/h2>\n<p>\u5229\u7528\u586b\u5145\u7684\u4e0d\u786e\u5b9a\u6027\uff0c\u653b\u51fb\u8005\u80fd\u591f\u901a\u8fc7\u4fee\u6539\u586b\u5145\u7684\u5185\u5bb9\u6765\u8fdb\u884c\u6d4b\u8bd5\u3002AlFardan\u548cPaterson\u5728[6]\u516c\u5e03\u4e86Lucky Thirteen\u653b\u51fb\u3002\u5728\u91c7\u8bbf\u4e2d\uff0cPaterson\u8868\u793a\uff0c\u653b\u51fb\u8005\u4f5c\u4e3a\u4e2d\u95f4\u4eba\u62e6\u622aTLS\u6570\u636e\u5305\uff0c\u5e76\u5bf9\u6570\u636e\u5305\u8fdb\u884c\u7be1\u6539\uff0c\u7531\u4e8e\u4f20\u8f93\u7ed9\u670d\u52a1\u5668\u7684\u6570\u636e\u5305\u5177\u6709\u7279\u6b8a\u7684\u6392\u5217\u65b9\u5f0f\uff0c\u5176\u4e2d\u7684\u4e00\u4e2a\u5305\u5934\u57df\u542b\u670913\u5b57\u8282\uff0c\u6240\u4ee5\u547d\u540d\u4e3a\u201c\u5e78\u8fd0\u00a013\u201d\u3002<\/p>\n<p>\u8be5\u653b\u51fb\u7528\u6765\u7834\u89e3\u5c0f\u5757\u7684CBC\u52a0\u5bc6\u6570\u636e\uff0c\u8fd9\u662f\u4e00\u79cd\u9488\u5bf9TLS\u8bb0\u5f55\u534f\u8bae\u7684\u65f6\u95f4\u4fa7\u4fe1\u9053\u653b\u51fb\uff0c\u8981\u6c42TLS\u8bb0\u5f55\u534f\u8bae\u91c7\u7528MEE ( MAC-Encode-Encrypt ) 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\u89e3\u5bc6\u65b9\u5f0f\u3002\u5728\u8fd9\u4e9b\u65b9\u6cd5\u4e2d\uff0c\u4f7f\u7528RC 4\u4ee3\u66ff\u52a0\u5bc6\u65b9\u5f0f\u662f\u4e0d\u53ef\u53d6\u7684\uff0cRC 4\u5728\u8fd1\u5e74\u6765\u53d1\u73b0\u5b58\u5728\u7684\u88ab\u5145\u5206\u5229\u7528\u7684\u4e25\u91cd\u6f0f\u6d1e\uff0c\u8fd9\u79cd\u65b9\u5f0f\u53ea\u4f1a\u8f6c\u79fb\u6f0f\u6d1e\u5230RC 4 \u4e0a\u3002\u800c\u589e\u52a0\u65f6\u95f4\u5ef6\u8fdf\u603b\u4f53\u4e0a\u4f1a\u9020\u6210\u8f83\u957f\u7684\u5ef6\u8fdf\uff0c\u800c\u4e14\u8fd9\u4e2a\u5ef6\u8fdf\u7684\u5f71\u54cd\u8db3\u4ee5\u62b5\u6d88\u5b83\u6240\u5e26\u6765\u7684\u597d\u5904\uff0c\u727a\u7272\u8f83\u9ad8\u6548\u7387\u6765\u6362\u53d6\u5b89\u5168\u7684\u65b9\u5f0f\u53ef\u80fd\u4e0d\u662f\u5f88\u597d\u7684\u9009\u62e9\uff0c\u6240\u4ee5\u589e\u52a0\u968f\u673a\u65f6\u95f4\u5ef6\u8fdf\u7684\u65b9\u5f0f\u4e5f\u662f\u4e0d\u53ef\u53d6\u7684\u3002\u800c\u4f7f\u7528\u8ba4\u8bc1\u52a0\u5bc6\u5219\u662f\u9009\u62e9\u8f83\u5b89\u5168\u7684\u52a0\u5bc6\u65b9\u5f0f\uff0c\u4f46\u662f\u8ba4\u8bc1\u52a0\u5bc6\u53ea\u5728TLS 1.2\u7248\u672c\u4e0a\u6709\u6dfb\u52a0\uff0c\u5bf9\u4f4e\u7248\u672c\u7684TLS\u534f\u8bae\u4e0d\u80fd\u6709\u6548\u7684\u89e3\u51b3\u3002\u4f5c\u8005\u91cd\u70b9\u4ecb\u7ecd\u7684\u4ed4\u7ec6\u5e94\u7528MEE-TLS-CBC \u89e3\u5bc6\u65b9\u5f0f\uff0c\u6838\u5fc3\u7684\u601d\u60f3\u662f\u786e\u4fdd\u4e00\u4e2a\u5bf9\u4e8eMEE-TLS-CBC \u5bc6\u6587\u56fa\u5b9a\u5927\u5c0f\u5177\u6709\u76f8\u540c\u7684\u5904\u7406\u65f6\u95f4\uff0c\u628a\u91cd\u70b9\u653e\u5728\u5904\u7406\u5bc6\u6587\u4e0a\uff0c\u800c\u4e0d\u662f\u660e\u6587\u90e8\u5206\uff0c\u5982\u5757\u957f\u5ea6\u6216\u8005\u5176\u5b83\u957f\u5ea6\u4fe1\u606f\uff0c\u4fee\u6539\u4e86TLS\u7684\u89e3\u5bc6\u65b9\u5f0f\u6765\u79fb\u9664\u65f6\u95f4\u4fa7\u4fe1\u9053\u7684\u5f71\u54cd\u3002<\/p>\n<h2><strong><b>POODLE <\/b><\/strong><strong><b>\u653b<\/b><\/strong><strong><b>\u51fb<\/b><\/strong><\/h2>\n<p>\u800c\u5982\u679c\u5bf9\u586b\u5145\u5185\u5bb9\u4e0d\u505a\u9650\u5b9a\uff0c\u90a3\u4e48CBC\u6a21\u5f0f\u7684\u7f3a\u9677\u5c06\u88ab\u653e\u5927\uff0c\u5229\u7528\u586b\u5145\u7684\u6700\u540e\u4e00\u4e2a\u5b57\u8282\u56fa\u5b9a\u4e3a\u586b\u5145\u957f\u5ea6\u7684\u7279\u6027\uff0c\u653b\u51fb\u5c06\u53d8\u5f97\u66f4\u4e3a\u53ef\u884c\u30022014\u5e7410\u6708\uff0cGoogle\u5b89\u5168\u56e2\u961f\u516c\u5e03\u4e86POODLE(Padding Oracle On Downgrade Legacy Encryption)\uff0c\u8fd9\u662f\u9488\u5bf9SSLv3\u7248\u672c\u534f\u8bae\u7684\u6f0f\u6d1e\uff0c\u53ef\u4ee5\u8ba9\u653b\u51fb\u8005\u7834\u89e3\u5c0f\u6bb5\u7684\u52a0\u5bc6\u6570\u636e[4]\u3002\u4e0d\u540c\u7684\u6d4f\u89c8\u5668\u5bf9\u4e8eSSL\u63e1\u624b\u5931\u8d25\u540e\u91c7\u53d6\u7684\u884c\u4e3a\u4e0d\u540c\uff0c\u670d\u52a1\u5668\u7aef\u5728\u534f\u8bae\u63e1\u624b\u5339\u914d\u5931\u8d25\u540e\uff0c\u4f1a\u91c7\u53d6\u964d\u7ea7\u7684\u63aa\u65bd\u3002\u5982\u88682-1(\u5185\u5bb9\u6765\u6e90\u4e8e\u300aHTTPS\u6743\u5a01\u6307\u5357\u300b)\u6240\u793a\uff0c\u5f00\u59cb\u63e1\u624b\u65f6\u670d\u52a1\u5668\u4f1a\u9009\u62e9\u6700\u9ad8\u7684\u534f\u8bae\u7248\u672c\u7ed9\u5ba2\u6237\u7aef\uff0c\u5982\u679c\u63e1\u624b\u5931\u8d25\uff0c\u670d\u52a1\u5668\u4f1a\u91cd\u8bd5\u65e7\u7248\u672c\u7684\u534f\u8bae\uff0c\u6700\u540e\u5f88\u53ef\u80fd\u88ab\u964d\u7ea7\u5230SSL 3\u7248\u672c\u3002\u800c\u4e14\u5b58\u5728\u7c7b\u4f3cWindows\u4e0a\u7684IE 6\u6d4f\u89c8\u5668\u53ea\u652f\u6301SSL 3\u3002\u653b\u51fb\u8005\u4e5f\u53ef\u4ee5\u7528\u8fd9\u79cd\u5bf9\u534f\u8bae\u7684\u517c\u5bb9\u6027\u4f7f\u63e1\u624b\u964d\u7ea7\u5230SSL 3\uff0c\u7136\u540e\u8fdb\u884cPOODLE \u653b\u51fb\u6765\u52ab\u6301\u4f1a\u8bdd\u3002<\/p>\n<table>\n<tbody>\n<tr>\n<td width=\"110\">Browser<\/td>\n<td width=\"110\">First Con<\/td>\n<td width=\"110\">Second Con<\/td>\n<td width=\"110\">Third Con<\/td>\n<td width=\"110\">Fourth Con<\/td>\n<\/tr>\n<tr>\n<td width=\"110\">IE6<\/td>\n<td width=\"110\">SSL\u00a03<\/td>\n<td width=\"110\">SSL 2<\/td>\n<td width=\"110\"><\/td>\n<td width=\"110\"><\/td>\n<\/tr>\n<tr>\n<td width=\"110\">IE 7<\/td>\n<td width=\"110\">TLS 1.0<\/td>\n<td width=\"110\">SSL\u00a03<\/td>\n<td width=\"110\"><\/td>\n<td width=\"110\"><\/td>\n<\/tr>\n<tr>\n<td width=\"110\">IE 8\uff5e10<\/td>\n<td width=\"110\">TLS 1.0<\/td>\n<td width=\"110\">SSL3<\/td>\n<td width=\"110\"><\/td>\n<td width=\"110\"><\/td>\n<\/tr>\n<tr>\n<td width=\"110\">IE 11<\/td>\n<td width=\"110\">TLS\u00a01.2<\/td>\n<td width=\"110\">TLS\u00a01.0<\/td>\n<td width=\"110\">SSL 3<\/td>\n<td width=\"110\"><\/td>\n<\/tr>\n<tr>\n<td width=\"110\">Safari 7<\/td>\n<td width=\"110\">TLS 1.2<\/td>\n<td width=\"110\">TLS 1.0<\/td>\n<td width=\"110\">SSL 3<\/td>\n<td width=\"110\"><\/td>\n<\/tr>\n<tr>\n<td width=\"110\">Firefox\u00a027<\/td>\n<td width=\"110\">TLS\u00a01.2<\/td>\n<td width=\"110\">TLS 1.1<\/td>\n<td width=\"110\">TLS 1.0<\/td>\n<td width=\"110\">SSL 3<\/td>\n<\/tr>\n<tr>\n<td width=\"110\">Chrome\u00a033<\/td>\n<td width=\"110\">TLS 1.2<\/td>\n<td width=\"110\">TLS 1.1<\/td>\n<td width=\"110\">TLS 1.0<\/td>\n<td width=\"110\">SSL 3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"text-align: center;\">\u8868 2-1 \u6d4f\u89c8\u5668\u81ea\u52a8\u964d\u7ea7<\/p>\n<p>\u9020\u6210POODLE\u653b\u51fb\u7684\u6839\u672c\u539f\u56e0\u4e5f\u662fCBC\u6a21\u5f0f\u5728\u8bbe\u8ba1\u4e0a\u7684\u7f3a\u9677\uff0cCBC\u53ea\u5bf9\u660e\u6587\u8fdb\u884c\u4e86\u8eab\u4efd\u9a8c\u8bc1\uff0c\u800c\u6ca1\u6709\u5bf9\u586b\u5145\u5b57\u8282\u90e8\u5206\u8fdb\u884c\u5b8c\u6574\u6027\u9a8c\u8bc1\u3002SSL 3\u5728\u586b\u5145\u65b9\u5f0f\u4e0a\u662f\u4fdd\u7559\u5bc6\u6587\u7684\u6700\u540e\u4e00\u5b57\u8282\uff0c\u586b\u5199\u4e3a\u586b\u5145\u7684\u957f\u5ea6\u3002\u4f46\u662f\uff0c\u89c4\u8303\u4e2d\u6ca1\u6709\u89c4\u5b9a\u7684\u586b\u5145\u7684\u5177\u4f53\u6570\u636e\u5185\u5bb9\uff0c\u4e5f\u6ca1\u6709\u88abMAC\u9a8c\u8bc1\uff0c\u6240\u4ee5\u5c31\u6ca1\u6709\u89c4\u5219\u6765\u786e\u8ba4\u586b\u5145\u7684\u5185\u5bb9\u662f\u5426\u88ab\u7be1\u6539\u8fc7\uff0c\u53ea\u80fd\u9a8c\u8bc1\u586b\u5145\u7684\u957f\u5ea6\u662f\u5426\u6b63\u786e\u3002\u8fd9\u6837\uff0cSSL 3\u7684\u586b\u5145\u5c31\u4ea7\u751f\u4e86\u4e25\u91cd\u7684\u4e0d\u5b89\u5168\u6027\u3002<\/p>\n<p>\u8fdb\u884cPOODLE\u653b\u51fb\u65f6\uff0c\u653b\u51fb\u8005\u80fd\u591f\u622a\u83b7\u5bc6\u6587\uff0c\u6b63\u5e38\u60c5\u51b5\u4e0b\uff0c\u76f4\u63a5\u4fee\u6539\u586b\u5145\u5b57\u8282\u7684\u5185\u5bb9\u7684\u65b9\u6cd5\u662f\u4e0d\u53ef\u884c\u7684\uff0c\u56e0\u4e3a\u5982\u679c\u6539\u53d8\u4e86MAC\u503c\u65f6\u4f1a\u5f15\u53d1\u9519\u8bef\uff0c\u53ea\u6709\u5f53\u6700\u540e\u6574\u4e2a\u5757\u90fd\u662f\u586b\u5145\u6570\u636e\u65f6\uff0c\u653b\u51fb\u8005\u624d\u80fd\u591f\u53ef\u4ee5\u8fdb\u884c\u81ea\u7531\u7684\u4fee\u6539\u5e76\u4e14\u4e0d\u4f1a\u5bfc\u81f4MAC\u6821\u9a8c\u7684\u5931\u8d25\u3002\u6b63\u5e38\u60c5\u51b5\u4e0b\uff0c\u653b\u51fb\u8005\u5c3d\u7ba1\u5bf9\u5bc6\u6587\u53ea\u505a\u4e86\u4e00\u4f4d\u4fee\u6539\uff0c\u4e5f\u4f1a\u5bfc\u81f4\u5bc6\u6587\u89e3\u5bc6\u53d1\u751f\u5927\u91cf\u7684\u53d8\u5316\uff0c\u800c\u4e14\u89e3\u5bc6\u540e\u7684\u5185\u5bb9\u4e5f\u4f1a\u53d8\u6210\u968f\u673a\u5185\u5bb9\u3002\u5b9e\u9645\u4e0a\uff0cSSL 3\u5728\u505a\u89e3\u5bc6\u6821\u9a8c\u65f6\uff0c\u53ea\u9700\u6700\u540e\u7684\u586b\u5145\u957f\u5ea6\u5b57\u8282\u662f\u6b63\u786e\u7684\u3002\u5728\u6bcf\u6b21\u653b\u51fb\u5c1d\u8bd5\u65f6\uff0c\u653b\u51fb\u8005\u5c06\u9700\u8981\u89e3\u5bc6\u7684\u5757\u79fb\u81f3\u6700\u540e\u4e00\u5757\uff0c\u7136\u540e\u4fee\u6539\u5012\u6570\u7b2c\u4e8c\u5757\u7684\u6700\u540e\u4e00\u4e2a\u5b57\u8282\u8fdb\u884c\u67e5\u8be2\uff0c\u4e00\u76f4\u91cd\u590d\u4fee\u6539\u76f4\u5230\u670d\u52a1\u5668\u6210\u529f\u63a5\u6536\u4fee\u6539\u540e\u7684\u5185\u5bb9\u3002\u653b\u51fb\u7684\u4e3b\u8981\u601d\u8def\u662f\u653b\u51fb\u8005\u9488\u5bf9\u8f83\u5927\u7684\u7684URL\u548c\u8f83\u5c0f\u7684\u8bf7\u6c42\u4f53\uff0c\u901a\u8fc7\u7f29\u77edURL\uff0c\u6bcf\u6b21\u4e00\u4e2a\u5b57\u8282\uff0c\u76f4\u5230\u627e\u5230\u6b63\u786e\u586b\u5145\u957f\u5ea6\u3002\u901a\u8fc7\u63d0\u4ea4\u8db3\u591f\u591a\u6b21\u7684\u4fee\u6539\u6765\u7834\u89e3\u4e00\u4e2a\u5b57\u8282\uff0c\u6700\u540e\u540c\u6b65\u4fee\u6539URL\u5185\u5bb9\u548c\u8bf7\u6c42\u4f53\u7684\u5927\u5c0f\u5e76\u5faa\u73af\u7834\u89e3\u5269\u4f59\u90e8\u5206\u3002\u653b\u51fb\u7684\u4e3b\u8981\u539f\u7406\u662f\u6570\u636e\u5757\u6700\u540e\u4e00\u4e2a\u5b57\u8282\u89e3\u5bc6\u540e\u7684\u503c\u4e3a15\uff08\u5047\u8bbe\u5757\u5927\u5c0f\u4e3a16\uff09<\/p>\n<p>(C<sub>i<\/sub>[15]) +\u00a0C<sub>n-1<\/sub>[15] = 15<\/p>\n<p>P<sub>i<\/sub>[15] +\u00a0C<sub>i-1<\/sub>[15] = (C<sub>i<\/sub>[15]) = 15 +\u00a0C<sub>n-1<\/sub>[15]<\/p>\n<p>P<sub>i<\/sub>[15] = 15 +\u00a0C<sub>n-1<\/sub>[15] +\u00a0C<sub>i-1<\/sub>[15]<\/p>\n<p>\u9762\u5bf9\u8fd9\u4e2a\u4e25\u91cd\u7684\u6f0f\u6d1e\uff0cChrome\u548cFirefox\u7b49\u6d4f\u89c8\u5668\u90fd\u7981\u6b62\u56de\u9000\u5230SSL3\uff0cIETF\u4e5f\u51fa\u53f0\u76f8\u5e94\u7684\u65b9\u6848\u6765\u5e94\u5bf9POODLE\u653b\u51fb\u3002\u6839\u636e\u6807\u51c6\u5316\u7684\u9632\u964d\u7ea7\u65b9\u6cd5\uff0c\u6d4f\u89c8\u5668\u53ef\u4ee5\u91c7\u7528\u4e00\u4e2a\u7279\u6b8a\u7684\u4fe1\u53f7\u5957\u4ef6 TLS_FALLBACK_SCSV[5]\u4fe1\u53f7\uff0c\u5f53\u4fe1\u53f7\u503c\u6539\u53d8\u65f6\uff0c\u6d4f\u89c8\u5668\u80fd\u591f\u901a\u77e5\u670d\u52a1\u5668\u81ea\u5df1\u88ab\u964d\u7ea7\u4e86\u3002\u8fd9\u4e2a\u65b9\u6848\u4e0d\u4ec5\u662f\u4e3a\u4e86\u89e3\u51b3SSL 3\u7684POODLE\u653b\u51fb\uff0c\u800c\u4e14\u662f\u4e3a\u4e86\u957f\u671f\u89e3\u51b3\u964d\u7ea7\u653b\u51fb\u95ee\u9898\u63d0\u51fa\u7684\u589e\u6dfb\u9632\u964d\u7ea7\u4fe1\u53f7\u3002\u8fd9\u4e2a\u653b\u51fb\u7684\u51fa\u73b0\u5b9e\u9645\u4e0a\u5927\u5e45\u5ea6\u63a8\u8fdb\u4e86SSL 3\u7684\u7981\u7528\uff0c\u4fc3\u4f7f\u670d\u52a1\u5668\u91c7\u7528\u66f4\u5b89\u5168\u7684\u534f\u8bae\uff0c\u4f7f\u7528\u66f4\u5b89\u5168\u7684\u52a0\u5bc6\u65b9\u5f0f\u3002<\/p>\n<p>&nbsp;<\/p>\n<h2><strong><b>Bleichenbacher <\/b><\/strong><strong><b>\u653b<\/b><\/strong><strong><b>\u51fb<\/b><\/strong><\/h2>\n<p>\u5f53\u7136\u586b\u5145\u7684\u65b9\u5f0f\u591a\u79cd\uff0c\u800c\u5177\u6709\u56fa\u5b9a\u683c\u5f0f\u7f16\u7801\u7684PKCS\u4e5f\u4f1a\u53d7\u5230\u586b\u5145\u7684\u5f71\u54cd\u3002Wagner \u548c Schneier \u5728\u8bba\u6587[7]\u4e2d\u63cf\u8ff0\u5230\uff0c\u653b\u51fb\u8005\u80fd\u591f\u901a\u8fc7\u4fee\u6539ClientHello\u4fe1\u606f\uff0c\u4f7fSSL 3\u7248\u672c\u770b\u8d77\u6765\u50cfSSL 2\u7248\u672c\u7684ClientHello\u4fe1\u606f\uff0c\u5f3a\u5236\u670d\u52a1\u5668\u4f7f\u7528\u6f0f\u6d1e\u66f4\u591a\u7684SSL 2\u3002\u4f5c\u4e3a\u5e94\u5bf9\uff0c\u4fbf\u63d0\u51fa\u4e86\u628a\u7248\u672c\u4fe1\u606f\u5305\u542b\u5728PKCS\u7f16\u7801ClientKeyExchange\u7684PreMasterSecret \u4fe1\u606f\u4e2d\uff0cPKCS \u7f16\u7801\u683c\u5f0f\u5982\u88682-2\u3002<\/p>\n<table>\n<tbody>\n<tr>\n<td width=\"138\">Block Type<\/td>\n<td width=\"138\">Padding<\/td>\n<td width=\"138\">Separation Byte<\/td>\n<td width=\"138\">Encapsulated Data<\/td>\n<\/tr>\n<tr>\n<td width=\"138\">00 02<\/td>\n<td width=\"138\">\u2026<\/td>\n<td width=\"138\">00<\/td>\n<td width=\"138\">PreMasterSecret<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"text-align: center;\">\u88682-2 PKCS#1 v1.5<\/p>\n<p>\u4f46\u662f\u8fd9\u79cd\u7f16\u7801\u65b9\u5f0f\u5177\u6709\u56fa\u5b9a\u7684\u683c\u5f0f\uff0c\u53ef\u4ee5\u88ab\u5229\u7528\u6765\u89e3\u6790\u6570\u636e\u4fe1\u606f\u5185\u5bb9\u3002Daniel Bleichenbacher\u5728[7]\u4e2d\u63d0\u51fa\u4e86\u65b0\u7684\u653b\u51fb(Bleichenbacher attack)\u3002\u57fa\u4e8eRSA\u7684SSL\u5bc6\u7801\u5957\u4ef6\u65b9\u5f0f\uff0c\u5229\u7528PKCS#1\u7684\u6807\u51c6\u683c\u5f0f\u5728\u53ef\u63a5\u53d7\u7684\u65f6\u95f4\u5185\u89e3\u5bc6\u9884\u4e3b\u5bc6\u94a5\u5185\u5bb9\u3002\u9884\u4e3b\u5bc6\u94a5\u662f\u5ba2\u6237\u7aef\u4f7f\u7528RSA\u5bc6\u7801\u5957\u4ef6\u65f6\u751f\u6210\u7684\u968f\u673a\u503c\uff0c\u4f7f\u7528\u670d\u52a1\u5668\u516c\u94a5\u52a0\u5bc6\u540e\u4f20\u9001\u7ed9\u670d\u52a1\u5668\u3002\u670d\u52a1\u5668\u901a\u8fc7\u79c1\u94a5\u89e3\u5bc6\u540e\uff0c\u80fd\u591f\u83b7\u5f97\u4e00\u4efd\u548c\u5ba2\u6237\u7aef\u76f8\u540c\u7684\u9884\u4e3b\u5bc6\u94a5\u548c\u968f\u673a\u503c\uff0c\u5176\u524d\u4e24\u4e2a\u5b57\u8282\u4e3a\u7248\u672c\u53f7\u3002\u653b\u51fb\u8005\u80fd\u591f\u7a83\u542c\u52a0\u5bc6\u5bc6\u6587\uff0c\u5e94\u7528Bleichenbacher\u653b\u51fb\u5230SSL 3\uff0c\u901a\u8fc7\u63a5\u6536\u670d\u52a1\u5668\u8fd4\u56de\u7684\u4e0d\u540c\u9519\u8bef\u4fe1\u606f\u6765\u8fa8\u522b\u4fee\u6539\u7684\u6b63\u786e\u6027\u3002<\/p>\n<p>Bleichenbacher\u653b\u51fb\u53ef\u4ee5\u8bc6\u522b\u57280x00 02\u540e\u4ee5\u660e\u6587\u5f00\u59cb\u7684\u5bc6\u6587\u4fe1\u606f\uff0c\u7136\u540e\u8fdb\u884cPadding Oracle\u653b\u51fb\u6765\u89e3\u5bc6\u9884\u4e3b\u5bc6\u94a5\uff0c\u8fdb\u4e00\u6b65\u53ef\u4ee5\u53d6\u5f97SSL\u7684\u4f1a\u8bdd\u5bc6\u94a5\u3002\u5145\u5206\u5229\u75280x00 02 \u5f00\u5934\u7684\u7279\u6027\uff0c\u5047\u8bbe\u653b\u51fb\u8005\u83b7\u5f97\u5bc6\u6587C<sub>0<\/sub>\uff0c\u60f3\u6062\u590d\u51fa\u660e\u6587M<sub>0<\/sub>\u3002\u653b\u51fb\u65b9\u6cd5\u662f\u901a\u8fc7\u5411\u670d\u52a1\u5668\u591a\u6b21\u53d1\u9001\u4fee\u6539\u540e\u7684\u5bc6\u6587\uff0c\u5206\u6790\u54cd\u5e94\u662f\u6b63\u786e\u8fd8\u662f\u9519\u8bef\u6765\u786e\u5b9a\u4fee\u6539\u7ed3\u679c\uff0c\u8fdb\u800c\u89e3\u5bc6\u4fe1\u606f\u3002\u5982\u679c\u6536\u5230\u6b63\u786e\uff0c\u5219\u8868\u793a\u662f0x00 02\u5f00\u5934\uff0c\u90a3\u4e482B &lt; m &lt; 3B-1\uff0c\u4e14B= 2<sup>8<\/sup>(L-2)\uff0c\u800c\u4e14\u57fa\u4e8eRSA\u52a0\u5bc6\u7684\u5ef6\u5c55\u6027\uff0c\u53ef\u5f97 C=(C<sub>0<\/sub>\u00a0* S<sub>e<\/sub>) mod N=(M<sub>0<\/sub>\u00a0*S)<sup>e<\/sup>\u00a0mod N\uff0c\u653b\u51fb\u8005\u53ef\u7528C\u8fdb\u884c\u67e5\u8be2\uff0c\u5982\u679c\u6536\u5230\u9519\u8bef\u5219\u589e\u52a0S\uff0c\u5e76\u91cd\u590d\u4e0a\u4e00\u6b65\u9aa4\u3002\u653b\u51fb\u8005\u53ef\u4ee5\u5229\u75280x00 02\u5927\u5e45\u5ea6\u51cf\u5c11\u53ef\u80fd\u7684\u53d6\u503c\uff0c2B &lt; M<sub>0<\/sub>*S &#8211; rN &lt; 3B\uff0c\u56e0\u6b64\u653b\u51fb\u8005\u80fd\u591f\u964d\u4f4e\u8303\u56f4(2B+rN)\/S &lt; M<sub>0<\/sub>\u00a0&lt; (3B+rN)\/S\uff0c\u7136\u540e\u8fed\u4ee3\u9009\u62e9S\uff0c\u8fdb\u884cOracle\u67e5\u8be2\uff0c\u8ba1\u7b97\u65b0\u7684r\u503c\uff0c\u653b\u51fb\u8005\u4fbf\u53ef\u4ee5\u4e0d\u65ad\u7f29\u5c0f\u5305\u542bM<sub>0<\/sub>\u7684\u8303\u56f4\uff0c\u4e0d\u65ad\u91cd\u590d\u76f4\u5230\u6700\u540e\u53ea\u5269\u552f\u4e00\u89e3\u3002<\/p>\n<p>\u4f46\u8fd9\u4e2a\u653b\u51fb\u5728\u88ab\u53d1\u73b0\u4e0d\u4e45\u4e4b\u540e\uff0c\u7814\u7a76\u4eba\u5458\u4fbf\u5bf9\u9519\u8bef\u4fe1\u606f\u505a\u4e86\u7edf\u4e00\uff0c\u5e76\u4e14\u5173\u95ed\u4e86\u8fd9\u4e2a\u4fa7\u4fe1\u9053\uff0c\u4f7f\u5f97\u8fd9\u4e2a\u653b\u51fb\u77ed\u671f\u5185\u5f97\u5230\u4e86\u89e3\u51b3\u3002\u9488\u5bf9\u8fd9\u4e2a\u6539\u8fdb\uff0cKlima\uff0cPokorny\u548cRosa \u5bf9Bleichenbacher\u653b\u51fb\u5728[8]\u4e2d\u505a\u4e86\u6539\u8fdb\uff0c\u4ed6\u4eec\u5728\u4f18\u5316\u4e2d\u91cd\u65b0\u5b9a\u4e49\u7b26\u5408PKCS \u660e\u6587\u7684\u53ef\u80fd\u533a\u95f4\u503c\u3002\u6839\u636eSSL\/TLS \u89c4\u8303\uff1a<\/p>\n<ul>\n<li>PreMasterSecret\u6b63\u597d\u662f46\u4e2a\u5b57\u8282<\/li>\n<li>PreMasterSecret\u524d\u7f00\u6709\u4e24\u4e2a\u7248\u672c\u5b57\u8282<\/li>\n<li>\u586b\u5145\u5b57\u8282\u4e0d\u7b49\u4e8e00<\/li>\n<li>\u7b26\u5408\u660e\u6587Mi\u7684PKCS\u5305\u542b\u5c06\u586b\u5145\u4e0e\u6709\u6548\u8f7d\u8377\u6570\u636e\u5206\u5f00\u7684\u7a7a\u5b57\u8282\u3002<\/li>\n<\/ul>\n<p>\u4ece\u800c\u5f97\u77e5\u4e00\u4e9b\u6709\u6548\u4fe1\u606f\uff0c\u586b\u5145\u5185\u5bb9\u5df2\u77e5\uff0c\u5176\u4e2d\u5305\u542b2\u7c7b\u578b\u5b57\u8282\uff0ck-51\u4e2a\u586b\u5145\u5b57\u8282\uff0c\u5355\u4e2a\u7a7a\u5b57\u8282\u4f5c\u4e3a\u5206\u9694\u7b26\uff0c2\u4e2a\u5b57\u8282\u7684\u7248\u672c\u53f7\u548c46\u4e2aPreMasterSecret\u5b57\u8282\u3002\u52a0\u5bc6\u5185\u5bb9\u4e2d\u4e0d\u4ec5\u6709PreMasterSecret\u7684\u503c\uff0c\u8fd8\u5e94\u8be5\u5b58\u5728\u7248\u672c\u53f7\u4fe1\u606f\uff0c\u653b\u51fb\u8005\u53ef\u4ee5\u901a\u8fc7\u9a8c\u8bc1\u6784\u9020\u7684\u7248\u672c\u53f7\u7684\u6b63\u786e\u6027\u8fbe\u5230\u67e5\u8be2\u7684\u76ee\u7684\u3002\u4ed6\u4eec\u8fd8\u8fdb\u884c\u4e86\u5bf9\u4e4b\u524d\u7684Bleichenbacher \u653b\u51fb\u7684\u9632\u5fa1\u63aa\u65bd\u8fdb\u884c\u7834\u574f\u7814\u7a76\uff0c\u5982\u751f\u6210\u968f\u673a\u9884\u4e3b\u5bc6\u94a5\u3002\u4e3a\u5e94\u5bf9\u63e1\u624b\u4fe1\u606f\u7684\u6cc4\u6f0f\uff0c\u8bbe\u5b9a\u76f4\u5230\u5bf9Finished\u6d88\u606f\u7684\u9a8c\u8bc1\u548c\u89e3\u5bc6\u53d1\u73b0\u5bc6\u94a5\u4e0d\u540c\u800c\u4e2d\u6b62\u4f1a\u8bdd\u3002\u540e\u6765\uff0cBleichenbacher \u653b\u51fb\u53c8\u88abBardou\uff0cFocardi\u7b49\u4eba\u8fdb\u884c\u4e86\u6539\u8fdb\uff0c\u5728[9]\u4e2d\u63d0\u51fa\u4e86\u76f8\u5e94\u7684\u6539\u8fdb\u65b9\u6cd5\uff0c\u4f7f\u5f97\u653b\u51fb\u6267\u884c\u5f97\u66f4\u5feb\uff0c\u800c\u4e14\u5927\u91cf\u51cf\u5c11\u67e5\u8be2\u7684\u6b21\u6570\uff0c\u6781\u5927\u7684\u589e\u52a0\u4e86\u653b\u51fb\u7684\u6548\u7387\u3002\u4ed6\u4eec\u8fd8\u7ed3\u5408\u4ed6\u4eec\u7684\u7ed3\u679c\u505a\u51fa\u4e86\u5206\u6790\uff0c\u4ece\u7ed3\u679c\u6765\u770b\u662f\u4e00\u4e2a\u975e\u5e38\u660e\u663e\u7684\u6539\u8fdb\u3002<\/p>\n<p>\u4e3a\u4e86\u5e94\u5bf9Bleichenbacher \u653b\u51fb\uff0c\u4eceRFC 2246\uff08TLS 1.0\uff09\u5f00\u59cb\u7684\u6240\u6709TLS RFC\u5efa\u8bae\u201c\u4ee5\u4e0e\u6b63\u786e\u683c\u5f0f\u5316\u7684RSA\u5757\u4e0d\u53ef\u533a\u5206\u7684\u65b9\u5f0f\u5904\u7406\u9519\u8bef\u683c\u5f0f\u5316\u7684\u6d88\u606f\u201d\u3002\u5728[10]\u4e2d\uff0c\u4f5c\u8005\u5c55\u793a\u4e86\u8fd9\u4e2a\u5de5\u4f5c\u5e76\u6ca1\u6709\u6210\u529f\u5b9e\u73b0\uff0c\u63d0\u51fa\u4e86\u56db\u4e2a\u65b0\u7684Bleichenbacher\u4fa7\u4fe1\u9053\u548c\u4e09\u4e2a\u6210\u529f\u7684Bleichenbacher\u653b\u51fb\u9488\u5bf9Java\u5b89\u5168\u5957\u63a5\u5b57\u6269\u5c55\uff08JSSE\uff09SSL \/ TLS\u5b9e\u73b0\u548c\u786c\u4ef6\u5b89\u5168\u5bb6\u7535\u4f7f\u7528Cavium NITROX SSL\u52a0\u901f\u5668\u82af\u7247\u3002\u4f5c\u8005\u6210\u529f\u9a8c\u8bc1Bleichenbacher\u653b\u51fb\u8fd8\u80fd\u591f\u6210\u529f\u7684\u5bf9SSL\uff0fTLS\u534f\u8bae\u8fdb\u884c\u653b\u51fb\uff0c\u6539\u5584\u5de5\u4f5c\u8fd8\u9700\u8981\u7ee7\u7eed\u3002<\/p>\n<h3><strong><b>DROWN <\/b><\/strong><strong><b>\u653b<\/b><\/strong><strong><b>\u51fb<\/b><\/strong><\/h3>\n<p>Bleichenbacher \u653b\u51fb\u8fdb\u4e00\u6b65\u5347\u7ea7\uff0c\u57282016\u5e74\uff0c\u5229\u7528PKCS#1 v1.5\u52a0\u5bc6\u586b\u5145\u7684\u9057\u7559\u95ee\u9898\uff0c\u7ed3\u5408SSLv2\u53d1\u8d77\u4e86\u5bf9SSL\uff0fTLS\u8fd1\u5e74\u6765\u8f83\u4e3a\u4e25\u91cd\u7684\u4e00\u573a\u653b\u51fb\u3002\u5728[11]\u4e2d\uff0cDROWN(Decrypting RSA using Obsolete and Weakened eNcryption)\u653b\u51fb\u5a01\u80c1\u5230\u4e86\u767e\u4e07\u7ea7\u7684\u670d\u52a1\u5668\u3002SSLv2 \u867d\u7136\u662f\u9000\u5f79\u7684\u534f\u8bae\uff0c\u4f46\u662f\u8fd8\u6709\u5927\u91cf\u7684\u670d\u52a1\u5668\u652f\u6301\u8be5\u534f\u8bae\uff0c\u6ca1\u6709\u5b8c\u5168\u79fb\u51fa\u5e9f\u5f03\u534f\u8bae\uff0c\u4ece\u800c\u5bfc\u81f4\u4e25\u91cd\u7684\u540e\u679c\u3002\u5229\u7528\u8be5\u6f0f\u6d1e\uff0c\u89c2\u5bdf\u670d\u52a1\u5668\u7684\u54cd\u5e94\u6765\u89e3\u5bc6\u7684RSA\u5bc6\u6587\u4fe1\u606f\u3002\u5e76\u4e14\u5229\u7528\u8fd9\u4e2a\u8fd9\u4e2a\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u4ee5\u5728\u6ca1\u6709RSA\u5bc6\u94a5\u79c1\u94a5\u7684\u60c5\u51b5\u4e0b\uff0c\u53ef\u4ee5\u5b8c\u6210\u8de8\u534f\u8bae\u7684\u653b\u51fb\uff0c\u6765\u89e3\u5bc6SSL 3 \u6216\u8005\u66f4\u9ad8\u7ea7\u7684TLS 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\u653b\u51fb\u9700\u8981\u5927\u7ea6\u767e\u4e07\u7ea7\u4ee5\u4e0a\u7684\u67e5\u8be2\u6b21\u6570\u3002\u800cDROWN\u653b\u51fb\u5219\u5229\u7528\u4e86\u4e00\u4e9b\u7279\u6b8a\u7684\u653b\u51fb\u6280\u5de7\u6765\u4f18\u5316\u653b\u51fb\u6548\u7387\uff0c\u4f7f\u7528Trimmer\u6765\u526a\u5207\u622a\u83b7\u7684\u7ecf\u8fc7RSA\u52a0\u5bc6\u7684\u660e\u6587\u4fe1\u606f\uff0c\u7136\u540e\u7cbe\u5fc3\u6784\u902000|02|PS|00|\u5bc6\u6587\u6d88\u606f\u7684\u7ed3\u6784\u3002\u7136\u540e\u5229\u7528SSL\u534f\u8bae\u7684\u51fa\u53e3\u534f\u8bae\u6765\u5f31\u5316\u4f1a\u8bdd\u5bc6\u94a5\uff0c\u653b\u51fb\u8005\u5c06\u622a\u65ad\u4f1a\u8bdd\u5bc6\u94a5\u81f35\u5b57\u8282\u3002\u7136\u540e\u8fdb\u884cOracle\u67e5\u8be2\uff0c\u4e00\u65e6\u6210\u529f\u67e5\u8be2\uff0c\u4fbf\u53ef\u4ee5\u5bf9\u6210\u529f\u7be1\u6539\u7684\u5bc6\u6587\u505a\u591a\u6b21\u5e73\u79fb\u64cd\u4f5c\uff0c\u4ece\u800c\u5bf9\u672a\u77e5\u957f\u660e\u6587\u6d88\u606f\u505a\u5206\u6bb5\u653b\u51fb\u3002\u6700\u540e\u5c06\u5404\u4e2a\u5c0f\u6bb5\u7684\u89e3\u5bc6\u4fe1\u606f\u7ec4\u5408\u8d77\u6765\uff0c\u6784\u6210\u89e3\u5bc6\u660e\u6587\u4fe1\u606f\u3002\u4f5c\u8005\u8fd8\u5bf9Bleichenbacher\u653b\u51fb\u505a\u51fa\u4e86\u65b0\u7684\u6539\u8fdb\uff0c\u4ed6\u4eec\u53d1\u73b0\u8be5\u65c1\u4fe1\u9053\u4ecd\u5b58\u5728\u53ef\u88ab\u5229\u7528\u7684\u65b9\u5f0f\uff0c\u5982\u4f7f\u7528\u540c\u4e00\u4e2a\u526a\u5207\u8fc7\u7684RSA\u5bc6\u6587\u5bf9Oracle\u505a\u4e24\u6b21\u8be2\u95ee\u3002\u82e5\u526a\u5207\u6b63\u786e\uff0c\u5728Oracle\u7684\u4e24\u6b21\u7b54\u590d\u4f1a\u4f7f\u7528\u6b63\u786e\u7684\u77ed\u4f1a\u8bdd\u5bc6\u94a5\u8fd4\u56de\u7ed3\u679c\uff0c\u8ba9\u653b\u51fb\u8005\u901a\u8fc7\u6210\u529f\u9a8c\u8bc1\u5f97\u77e5\u526a\u5207\u662f\u6210\u529f\u7684\u3002\u5426\u5219Oracle-E\u7684\u4e24\u6b21\u7b54\u590d\u4f1a\u4f7f\u7528\u4e24\u4e2a\u4e0d\u540c\u7684\u968f\u673a\u6570\u4f2a\u88c5\u201c\u77ed\u4f1a\u8bdd\u5bc6\u94a5\u201d\uff0c\u901a\u8fc7\u4ed4\u7ec6\u9a8c\u8bc1\u6536\u5230\u7684\u8fd4\u56de\u4fe1\u606f\uff0c\u653b\u51fb\u8005\u4e5f\u80fd\u5f97\u77e5\u526a\u5207\u662f\u5426\u6210\u529f\u3002\u653b\u51fb\u8005\u8fd8\u5229\u7528\u4e86SSLv2 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3\u7684\u5b8c\u5168\u7981\u7528\u4e5f\u662f\u5f88\u6709\u610f\u4e49\u7684\u3002<\/p>\n<p>&nbsp;<\/p>\n<h3><strong><b>\u53c2\u8003\u6587\u732e<\/b><\/strong><\/h3>\n<p>[ 1 ] S.Vaudenay. <a href=\"https:\/\/www.iacr.org\/archive\/eurocrypt2002\/23320530\/cbc02_e02d.pdf\"><u>Security flaws induced by CBC padding, application to SSL, IPSEC, WTLS\u2026<\/u><\/a>\u00a0. In EUROCRYPT, 2002<\/p>\n<p>[ 2 ] B. Kaliski. <a href=\"https:\/\/tools.ietf.org\/html\/rfc2898\"><u>PKCS #5: Password-Based Cryptography Specification Version 2.0 .<\/u><\/a><\/p>\n<p>RFC 2898, Sep 2000<\/p>\n<p>[ 3 ] B. Kaliski, and A. Rusch.<a href=\"#appendix-B.2.5\"><u>\u00a0PKCS #5: Password-Based Cryptography Specification Version 2.1.<\/u><\/a>\u00a0RFC 8018, Jan 2017<\/p>\n<p>[ 4 ] B. M\u00f6ller, T. Duong, and K. Kotowicz. <a href=\"https:\/\/www.openssl.org\/~bodo\/ssl-poodle.pdf\"><u>This POODLE Bites: Exploiting The SSL 3.0 Fallback<\/u><\/a>. Google, Sep 2014<\/p>\n<p>[ 5 ] B. Moeller, A. Langley. <a href=\"https:\/\/tools.ietf.org\/html\/rfc7507\"><u>TLS fallback signaling cipher suite value (SCSV) \u00a0for preventing protocol downgrade attacks<\/u><\/a>. RFC 7507, 2015<\/p>\n<p>[ 6 ] N. AlFardan and K. G. Paterson. <a href=\"http:\/\/ieeexplore.ieee.org\/stamp\/stamp.jsp?arnumber=6547131\"><u>Lucky thirteen: breaking the TLS and DTLS record protocols<\/u><\/a>. In IEEE, 2013<\/p>\n<p>[ 7 ] D. Wagner and B. Schneier. Analysis of the SSL 3 protocol. In USENIX, 1996<\/p>\n<p>[ 8 ] V. Kl\u00edma, O. Pokorn\u00fd and T. Rosa2. Attacking RSA-based sessions in SSL\/TLS. In CHES, 2003<\/p>\n<p>[ 9 ] R. Bardou, R. Focardi, Y. Kawamoto. Efficient padding oracle attacks on cryptographic hardware. INRIA, 2012<\/p>\n<p>[ 10 ] C. Meyer, \u00a0J. Somorovsky, E. Weiss. Revisting SSL\/TLS implementations: New Bleichenbacher side channels and attacks. In USENIX, 2014<\/p>\n<p>[ 11 ] N. Aviram, S. Schinzel, J. Somorovsky. DROWN: Breaking TLS using SSLv2. USENIX, 2016<\/p>\n","protected":false},"excerpt":{"rendered":"<p>SSL\/TLS\u7684\u8fd1\u5e74\u76f8\u5173\u653b\u51fb\u7814\u7a76\u7efc\u8ff0\uff08\u4e8c\uff09 \u534f\u8bae\u8bbe\u8ba1\u4e0d\u8db3\u7684\u6f0f\u6d1e (\u57fa\u4e8eCBC\u3000padding\u00a0\u7684\u653b\u51fb&#8230; <a class=\"continue-reading-link\" href=\"http:\/\/202.112.238.40\/wp\/?p=1835\"> Continue reading <span class=\"meta-nav\">&rarr; <\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-1835","post","type-post","status-publish","format-standard","hentry","category-research"],"_links":{"self":[{"href":"http:\/\/202.112.238.40\/wp\/index.php?rest_route=\/wp\/v2\/posts\/1835","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/202.112.238.40\/wp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/202.112.238.40\/wp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/202.112.238.40\/wp\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/202.112.238.40\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1835"}],"version-history":[{"count":3,"href":"http:\/\/202.112.238.40\/wp\/index.php?rest_route=\/wp\/v2\/posts\/1835\/revisions"}],"predecessor-version":[{"id":1840,"href":"http:\/\/202.112.238.40\/wp\/index.php?rest_route=\/wp\/v2\/posts\/1835\/revisions\/1840"}],"wp:attachment":[{"href":"http:\/\/202.112.238.40\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1835"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/202.112.238.40\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1835"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/202.112.238.40\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1835"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}