{"id":616,"date":"2024-12-25T06:24:36","date_gmt":"2024-12-25T06:24:36","guid":{"rendered":"http:\/\/mikuhacker.cn\/?p=616"},"modified":"2025-01-17T08:48:56","modified_gmt":"2025-01-17T08:48:56","slug":"java-%e4%bb%a3%e7%a0%81%e5%ae%a1%e8%ae%a1-%e5%ad%a6%e4%b9%a0%e7%ac%94%e8%ae%b0","status":"publish","type":"post","link":"http:\/\/mikuhacker.cn\/?p=616","title":{"rendered":"Java \u4ee3\u7801\u5ba1\u8ba1\u7b14\u8bb0"},"content":{"rendered":"\n<p class=\"has-pale-pink-color has-text-color has-link-color wp-elements-86c4412d068055ad7a5b590de01a9045\">\u524d\u8a00\uff1a\u770b\u5230\u540c\u4e61\u5b66\u957f\u8bf4\u9762\u8bd5\u65f6\u5019\u7ecf\u5e38\u95eeJava\u65b9\u9762\u7684\u5b89\u5168\u77e5\u8bc6\uff0c\u4e8e\u662f\u4e70\u4e86\u672c\u5947\u5b89\u4fe1\u7684Java\u5ba1\u8ba1\u4e66\u770b\u4e86\u4e0b\uff0c\u5df2\u7ecf\u5b66\u5b8c\uff0c\u8865\u4e00\u4e0b\u7b14\u8bb0\u3002WEB\u5e38\u89c1\u6f0f\u6d1e\u7684\u539f\u7406\u57fa\u672c\u662f\u4e92\u901a\u7684\uff0c\u6240\u4ee5\u8fd9\u4e2a\u7b14\u8bb0\u4e0d\u7740\u91cd\u8bb2\u5e38\u89c1\u6f0f\u6d1e\u7684\u539f\u7406\uff0c\u53ea\u8bb0\u5f55\u4e00\u4e9b\u5ba1\u8ba1\u65f6\u5019\u8981\u6ce8\u610f\u7684\u51fd\u6570\u548c\u529f\u80fd\u4ee3\u7801\uff0c\u4ee5\u53ca\u53ef\u80fd\u4e0ePHP\u4e0d\u540c\u7684\u5730\u65b9\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5e38\u89c1\u6f0f\u6d1e\u5ba1\u8ba1<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1.SQL\u6ce8\u5165\u6f0f\u6d1e<\/h3>\n\n\n\n<p>Java\u6267\u884cSQL\u8bed\u53e5\u5e38\u89c1\u65b9\u5f0f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4f7f\u7528JDBC\u7684java.sql.Statement\u6267\u884cSQL\u8bed\u53e5<\/li>\n\n\n\n<li>\u4f7f\u7528JDBC\u7684java.sql.PreparedStatement\u6267\u884cSQL\u8bed\u53e5<\/li>\n\n\n\n<li>\u4f7f\u7528Hibernate\u6267\u884cSQL\u8bed\u53e5<\/li>\n\n\n\n<li>\u4f7f\u7528MyBatis\u6267\u884cSQL\u8bed\u53e5<\/li>\n<\/ul>\n\n\n\n<p>\u5176\u4e2dStatement\u9700\u8981\u901a\u8fc7\u62fc\u63a5\u6765\u6267\u884c\u8bed\u53e5\u4e14\u6bcf\u6b21\u90fd\u8981\u8fdb\u884c\u7f16\u8bd1\uff0c\u82e5\u4e0d\u5bf9\u8f93\u5165\u505a\u8fc7\u6ee4\u4f1a\u5bfc\u81f4SQL\u6ce8\u5165\u6f0f\u6d1e\uff1b\u800cPrepareStatement\u8fdb\u884c\u9884\u7f16\u8bd1\u53c2\u6570\u5316\u67e5\u8be2\u80fd\u591f\u6709\u6548\u9632\u6b62SQL\u6ce8\u5165\u3002\u901a\u8fc7\u641c\u7d22\u8fd9\u4e24\u4e2a\u7c7b\u7684\u8c03\u7528\u5e76\u8fdb\u884c\u5ba1\u8ba1\uff0c\u4ece\u800c\u68c0\u67e5\u51fa\u6f0f\u6d1e\u662f\u5426\u5b58\u5728\u3002<\/p>\n\n\n\n<p>PreparedStatement\u662f\u4f7f\u7528\u5360\u4f4d\u7b26\u4f20\u5165\u53c2\u6570\uff0c\u56e0\u6b64\u5728\u6267\u884corder by\u65f6\u4f1a\u51fa\u9519\uff08\u5177\u4f53\u539f\u56e0\u4e0d\u8be6\u7ec6\u8bf4\u660e\uff0c\u81ea\u884c\u767e\u5ea6\uff09\uff0c\u53ea\u80fd\u4f7f\u7528\u5b57\u7b26\u4e32\u62fc\u63a5\u7684\u65b9\u5f0f\uff0c\u56e0\u6b64\u53ea\u80fd\u4f7f\u7528Statement\u3002<\/p>\n\n\n\n<p>Java\u9884\u7f16\u8bd1\u67e5\u8be2\u4e2d\u4e0d\u4f1a\u5bf9%\u548c_\u8fdb\u884c\u8f6c\u4e49\u5904\u7406\uff0c\u800c%\u548c_\u662flike\u67e5\u8be2\u7684\u901a\u914d\u7b26\uff0c\u4e0d\u505a\u76f8\u5173\u8fc7\u6ee4\u53ef\u80fd\u5bfc\u81f4\u6076\u610f\u6a21\u7cca\u67e5\u8be2\u3002<\/p>\n\n\n\n<p>MyBatis\u4e2d\u7684#{}\u5728\u5e95\u5c42\u4e0a\u4f7f\u7528\u201c?\u201d\u4f5c\u4e3a\u5360\u4f4d\u7b26\u6765\u751f\u6210PreparedStatement\uff0c\u662f\u53c2\u6570\u5316\u67e5\u8be2\u9884\u7f16\u8bd1\u7684\u673a\u5236\uff0c\u8f83\u5b89\u5168\uff0c\u4e5f\u56e0\u6b64\u5728\u4f7f\u7528order by\u3001like\u3001in\u67e5\u8be2\u65f6\u4f1a\u62a5\u9519\uff0c\u9700\u8981\u8f6c\u7528${}\u8fdb\u884c\u67e5\u8be2\uff1b${}\u5c06\u4f20\u5165\u7684\u6570\u636e\u76f4\u63a5\u663e\u793a\u751f\u6210\u5728SQL\u8bed\u53e5\u4e2d\uff0c\u7c7b\u4f3c\u5b57\u7b26\u4e32\u62fc\u63a5\uff0c\u56e0\u6b64\u4e0d\u5bf9\u8f93\u5165\u8fdb\u884c\u68c0\u67e5\u3001\u8fc7\u6ee4\u5c06\u53ef\u80fd\u5bfc\u81f4SQL\u6ce8\u5165\u3002<\/p>\n\n\n\n<p>\u5ba1\u8ba1\u603b\u7ed3\uff1a\uff08\u7559\u610fgetParameter\u51fd\u6570\u6765\u627e\u5230\u53ef\u63a7\u53c2\u6570\uff09<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Statement<\/li>\n\n\n\n<li>createStatement<\/li>\n\n\n\n<li>PreparedStatement<\/li>\n\n\n\n<li>like &#8216;%${<\/li>\n\n\n\n<li>in (${<\/li>\n\n\n\n<li>select<\/li>\n\n\n\n<li>update<\/li>\n\n\n\n<li>insert<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2.\u4efb\u610f\u6587\u4ef6\u4e0a\u4f20\u6f0f\u6d1e<\/h3>\n\n\n\n<p>\u5e38\u89c1\u6587\u4ef6\u4e0a\u4f20\u65b9\u5f0f\uff1a<\/p>\n\n\n\n<p class=\"has-pale-pink-color has-text-color has-link-color wp-elements-d57917d1ef37c04b013a7861384dedd0\"><strong>\u901a\u8fc7\u6587\u4ef6\u6d41\u7684\u65b9\u5f0f\u4e0a\u4f20<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public String fileUpload(@RequestParam(\"file\") CommonsMulpartFile file) throws IOException{\n    long startTime = System.currentTimeMillis();\n    System.out.println(\"fileName: \"+file.getOriginalFilename());\ntry{\n        OutputStream os = new FileOutputStream(\"\/tmp\"+newDate().getTime()+file.getOriginalFilename());\n        InputStream is = file.getInputStream();\n        int temp;\n        while((temp = is.read())!=(-1))\n        {\n            os.write(temp);\n        }\n        os.flush();\n        os.close();\n        is.close();\n    } catch(FileNotFoundException e){\n        e.printStackTrace();\n    }\n    return \"\/success\";\n}<\/code><\/pre>\n\n\n\n<p class=\"has-pale-pink-color has-text-color has-link-color wp-elements-4f3180da793def033f08e6f63612ba68\"><strong>\u901a\u8fc7ServletFileUpload\u65b9\u5f0f\u4e0a\u4f20<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>String realPath = this.getServletContext().getRealPath(\"\/upload\");\nString tempPath = \"\/tmp\";\nFile f = new File(realPath);\nif(!f.exists()&amp;&amp;!f.isDirectory()){\n    f.mkdir();\n}\nFile f1 = new File(tempPath);\nif(!f1.isDirectory)){\n    f1.mkdir();\n}\nDiskFileUploadItemFactory factory = new DiskFileItemFactory();\nfactory.setRepository(f1);\nServletFileUpload upload = new ServletFileUpload(factory);\nupload.setHeaderEncoding(\"UTF-8\");\nif(!ServletFileUpload.isMultipartContent(req)){ return; }\nList&lt;FileItem&gt; items = upload.parseRequest(req);\nfor(FileItem item:items){\n    if(item.isFormField()){\n        String filedName = item.getFieldName();\n        String filedValue = item.getString(\"UTF-8\");\n    }\n    else{\n        String filedName = item.getName();\n        if(fileName == null || \"\".equals(fileName.trim())){ continue; }\n        fileName = fileName.substring(fileName.lastIndexOf(\"\/\")+1);\n        String filePath = realPath+\"\/\"+fileName;\n        InputStream in = item.getInputStream();\n        OutputStream out = new FileOutputStream(filePath);\n\nbyte b&#91;] = new byte&#91;1024];\nint len = -1;\nwhile((len=in.read(b)))!=-1){\n    out.write(b,0,len);\n}\nout.close();\nin.close();\ntry{\n    Thread.sleep(3000);\n} catch(InterruptedException e){\n    e.printStackTrace();\n}\nitem.delete();<\/code><\/pre>\n\n\n\n<p class=\"has-pale-pink-color has-text-color has-link-color wp-elements-847f048e3bd730e84a7d236945e01a2d\"><strong>\u901a\u8fc7MultipartFile\u65b9\u5f0f\u4e0a\u4f20<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public String handleFileUpload(@RequestParam(\"file\") MultipartFile file){\n    if(file.isEmpty()){\n        return \"\u8bf7\u4e0a\u4f20\u6587\u4ef6\";\n    }\n    \/\/\u83b7\u53d6\u6587\u4ef6\u540d\n    String fileName = file.getOriginalFilename();\n    String suffixName = fileName.substring(fileName.indexOf(\".\"));\n    String filePath = \"\/tmp\";\n    File dest = new File(filePath+fileName);\n    if(!dest.getParentFile().exists()){\n        dest.getParentFile().mkdirs();\n    }\n    try{\n        file.transferTo(dest);\n        return \"\u4e0a\u4f20\u6210\u529f\";\n    } catch(IllegalStateException e){\n        e.printStackTrace();\n    } catch(IOException e){\n        e.printStackTrace();\n    }\n    return \"\u4e0a\u4f20\u5931\u8d25\";\n}<\/code><\/pre>\n\n\n\n<p>\u5ba1\u8ba1\u603b\u7ed3\uff1a(\u68c0\u67e5\u524d\u540e\u7aef\u662f\u5426\u5b58\u5728\u540e\u7f00\u8fc7\u6ee4\u4e0d\u5168\u548c\u8bfb\u53d6\u540e\u7f00\u65b9\u5f0f\u9519\u8bef\u7b49)<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>org.apache.commons.fileupload<\/li>\n\n\n\n<li>java.io.File<\/li>\n\n\n\n<li>MultipartFile<\/li>\n\n\n\n<li>RequestMethod<\/li>\n\n\n\n<li>MultipartHttpServletRequest<\/li>\n\n\n\n<li>CommonsMultipartResolver<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">3.XSS\u6f0f\u6d1e<\/h3>\n\n\n\n<p>XXS\u6f0f\u6d1e\u7684\u4ea7\u751f\u5fc5\u7136\u5b58\u5728\u76f8\u5173\u7684\u8f93\u5165\/\u8f93\u51fa\uff1aJava\u8f93\u5165\u901a\u5e38\u4f7f\u7528request.getParameter(param)\u6216${param}\u8f93\u5165\u4fe1\u606f\u3002\u8f93\u51fa\u8868\u73b0\u4e3a\u524d\u7aef\u7684\u6e32\u67d3\uff0c\u53ef\u901a\u8fc7\u5b9a\u4f4d\u524d\u7aef\u4e2d\u4e00\u4e9b\u6807\u8bc6\u6765\u627e\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">XSS\u5e38\u89c1\u89e6\u53d1\u4f4d\u7f6e<\/h4>\n\n\n\n<p>JSP\u8868\u8fbe\u5f0f<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>&lt;%=\u53d8\u91cf %&gt;<\/li>\n\n\n\n<li>&lt;% out.println(\u53d8\u91cf); %&gt;<\/li>\n\n\n\n<li>&lt;% String msg = request.getParameter(&#8216;\u53d8\u91cf&#8217;);%&gt;<\/li>\n<\/ul>\n\n\n\n<p>EL\uff08Expression Language\uff0c\u8868\u8fbe\u5f0f\u8bed\u8a00\uff09<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>&lt;c:out&gt;\u6807\u7b7e\uff1a\u663e\u793a\u4e00\u4e2a\u8868\u8fbe\u5f0f\u7684\u7ed3\u679c<\/li>\n\n\n\n<li>&lt;c:if&gt;\u6807\u7b7e\uff1a\u5224\u65ad\u8868\u8fbe\u5f0f\u7684\u503c<\/li>\n\n\n\n<li>&lt;c:forEach&gt;\u6807\u7b7e\uff1a\u8fed\u4ee3\u8f93\u51fa\u6807\u7b7e\u5185\u90e8\u7684\u5185\u5bb9<\/li>\n<\/ul>\n\n\n\n<p>ModelAndView\u7c7b\u7528\u6765\u5b58\u50a8\u5904\u7406\u5b8c\u6210\u540e\u7684\u7ed3\u679c\u6570\u636e\uff0c\u4ee5\u53ca\u663e\u793a\u8be5\u6570\u636e\u7684\u89c6\u56fe\uff0c\u5176\u524d\u7aefJSP\u9875\u9762\u53ef\u4ee5\u4f7f\u7528${\u53c2\u6570}\u7684\u65b9\u6cd5\u6765\u83b7\u53d6\u503c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>package com.dgr.controller;\n\nimport org.springframework.stereotype.Controller;\nimport org.springframework.web.bind.annotation.RequestMapping;\nimport org.springframework.web.servlet.ModelAndView;\n@RequestMapping(\"mvc\")\n@Controller\npublic class TestRequestMapping{\n    @RequestMapping(value=\"\/getMessage\")\n    public ModelAndView getMessage(){\n        ModelAndView modelandview = new ModelAndView();\n        modelandview.setViewName(\"message\");\n        modelandview.addObject(\"message\",\"Hello World\");\n        return modelandview;\n    }\n}<\/code><\/pre>\n\n\n\n<p>ModelMap\u7c7b\u7684\u4f7f\u7528<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/Spring\u4e5f\u63d0\u4f9b\u4e86ModelMap\u7c7b\uff0c\u6b64\u5904\u7528java.util.Map\u5b9e\u73b0\uff0c\u53ef\u6839\u636e\u6a21\u578b\u5c5e\u6027\u7684\u5177\u4f53\u7c7b\u578b\u81ea\u52a8\u751f\u6210\u6a21\u578b\u5c5e\u6027\u7684\u540d\u79f0\npublic String testmethod(String someparam,ModelMap model){\n    \/\/\u7701\u7565\u65b9\u6cd5\u5904\u7406\u903b\u8f91\n    \/\/\u5c06\u6570\u636e\u653e\u7f6e\u5230ModelMap\u7c7b\u7684model\u5bf9\u8c61\u4e2d\uff0c\u7b2c\u4e8c\u4e2a\u53c2\u6570\u53ef\u4ee5\u662f\u4efb\u4f55Java\u7c7b\u578b\n    Model.addAttribute(\"key\",someparam);\n    return \"success\";\n}<\/code><\/pre>\n\n\n\n<p>Model\u7c7b\u7684\u4f7f\u7528\uff08Model\u7c7b\u662f\u4e00\u4e2a\u63a5\u53e3\u7c7b\uff0c\u901a\u8fc7attribute()\u6dfb\u52a0\u6570\u636e\uff0c\u5b58\u50a8\u7684\u6570\u636e\u8303\u56f4\u662frequestScope\uff09<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public String index1(Model model){\n    model.addAttribute(\"result\",\"\u540e\u53f0\u8fd4\u56de\");\n    return \"result\";\n}<\/code><\/pre>\n\n\n\n<p>\u5ba1\u8ba1\u603b\u7ed3\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>&lt;%=<\/li>\n\n\n\n<li>${<\/li>\n\n\n\n<li>&lt;c:out<\/li>\n\n\n\n<li>&lt;c:if<\/li>\n\n\n\n<li>&lt;c:forEach<\/li>\n\n\n\n<li>ModelAndView<\/li>\n\n\n\n<li>ModelMap<\/li>\n\n\n\n<li>Model<\/li>\n\n\n\n<li>request.gerParameter<\/li>\n\n\n\n<li>request.setAttribute<\/li>\n\n\n\n<li>response.getWriter().print()<\/li>\n\n\n\n<li>response.getWriter().writer()<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">4.\u76ee\u5f55\u7a7f\u8d8a\u6f0f\u6d1e<\/h3>\n\n\n\n<p>\u76ee\u5f55\u7a7f\u8d8a\u7684\u672c\u8d28\u662f\u8def\u5f84\u53ef\u63a7\uff0c\u4e00\u65e6\u6d89\u53ca\u6587\u4ef6\u7684\u8bfb\u53d6\u95ee\u9898\u4fbf\u4f1a\u6d89\u53cajava.io.File\u7c7b\uff0c\u5ba1\u8ba1\u65f6\u4f18\u5148\u67e5\u627ejava.io.File\u7c7b\u7684\u8c03\u7528\uff0c\u5224\u65adPaths\u3001path\u3001System.getProperty(&#8220;user.dir&#8221;)\u7b49\u53ef\u80fd\u4f1a\u7528\u6765\u6784\u9020\u8def\u5f84\u7684\u5173\u952e\u5b57<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5.URL\u8df3\u8f6c\u6f0f\u6d1e<\/h3>\n\n\n\n<p>\u68c0\u67e5\u7528\u4e8eURL\u91cd\u5b9a\u5411\u7684\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u901a\u8fc7ModelAndView<\/li>\n\n\n\n<li>\u901a\u8fc7\u8fd4\u56deString<\/li>\n\n\n\n<li>\u4f7f\u7528sendRedirect<\/li>\n\n\n\n<li>\u4f7f\u7528RedirectAttributes<\/li>\n\n\n\n<li>\u901a\u8fc7\u8bbe\u7f6eHeader<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">6.\u547d\u4ee4\u6267\u884c\u6f0f\u6d1e<\/h3>\n\n\n\n<p class=\"has-vivid-red-color has-text-color has-link-color wp-elements-cba9ad2166620042385e59a8698131ed\"><strong>\u5173\u6ce8Runtime.getRuntime.exec\u3001ProcessBuilder.start<\/strong>\uff1bJava\u7684Runtime.getRuntime.exec\u548cProcessBuilder.start\u6267\u884c\u7cfb\u7edf\u547d\u4ee4\u65f6\uff0c\u5b9e\u9645\u4e0a\u5e76\u6ca1\u6709\u83b7\u5f97UNIX\u6216Linux shell\u5e76\u5728\u5176\u4e2d\u5141\u8bb8\u547d\u4ee4\uff0c\u56e0\u6b64\u8981\u4f7f\u7528UNIX\/Linux\u7ba1\u9053\u4e4b\u7c7b\u7684\u529f\u80fd\uff0c\u5fc5\u987b\u5148\u901a\u8fc7\/bin\/sh\u8c03\u7528\u4e00\u4e2ashell\u7a0b\u5e8f<\/p>\n\n\n\n<p>Java.lang.ProcessBuilder\u7c7b\u7528\u4e8e\u521b\u5efa\u64cd\u4f5c\u7cfb\u7edf\u8fdb\u7a0b\uff0c\u6bcf\u4e2aProcessBuilder\u5b9e\u4f8b\u7ba1\u7406\u4e00\u4e2a\u8fdb\u7a0b\u5c5e\u6027\u96c6\u3002start()\u65b9\u6cd5\u5229\u7528\u8fd9\u4e9b\u5c5e\u6027\u521b\u5efa\u4e00\u4e2a\u65b0\u7684Process\u8fdb\u7a0b\u5b9e\u4f8b\uff0c\u4ece\u800c\u5229\u7528ProcessBuilder\u6267\u884c\u547d\u4ee4\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ProcessBuilder pb = new ProcessBuilder(\"mycommand\",\"myArg\");\nProcess process = pb.start();<\/code><\/pre>\n\n\n\n<p> java.lang.Runtime\u516c\u5171\u7c7b\u4e2d\u7684exec()\u65b9\u6cd5\u540c\u6837\u4e5f\u53ef\u4ee5\u6267\u884c\u7cfb\u7edf\u547d\u4ee4\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>public Process exec(String command)<\/li>\n\n\n\n<li>public Process exec(String[] cmdarray)<\/li>\n\n\n\n<li>public Process exec(String[] cmdarray,String[] envp)<\/li>\n\n\n\n<li>public Process exec(String[] cmdarray,String[] envp,File dir)<\/li>\n\n\n\n<li>public Process exec(String command,String[] envp)<\/li>\n\n\n\n<li>public Process exec(String command,String[] envp,File dir)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">7.XXE\u6f0f\u6d1e<\/h3>\n\n\n\n<p>\u641c\u7d22\u5e38\u89c1\u7684\u80fd\u591f\u89e3\u6790XML\u7684\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>XMLReader<\/li>\n\n\n\n<li>SAXBuilder<\/li>\n\n\n\n<li>SAXReader<\/li>\n\n\n\n<li>SAXParserFactory<\/li>\n\n\n\n<li>Digester \/\/\u901a\u5e38\u6ca1\u6709\u56de\u663e<\/li>\n\n\n\n<li>DocumentBuilderFactory<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">8.SSRF\u6f0f\u6d1e<\/h3>\n\n\n\n<p>\u4e0ePHP\u4e0d\u540c\uff0c\u5728Java\u4e2dSSRF\u4ec5\u652f\u6301sun.net.www.protocol\u4e0b\u6240\u6709\u7684\u534f\u8bae\uff1ahttp\u3001https\u3001file\u3001ftp\u3001mailto\u3001jar\u53canetdoc\u534f\u8bae\uff0c\u56e0\u6b64\u4e0d\u80fd\u50cfPHP\u4e00\u6837\u4f7f\u7528gopher\u534f\u8bae\u6765\u6269\u5c55\u653b\u51fb\u9762<\/p>\n\n\n\n<p>\u5728Java\u4e2d\u53ef\u4ee5\u901a\u8fc7file\u6216netdoc\u534f\u8bae\u8fdb\u884c\u5217\u76ee\u5f55\u64cd\u4f5c\u4ee5\u8bfb\u53d6\u66f4\u591a\u654f\u611f\u4fe1\u606f\uff0c\u5bf9\u4e8e\u65e0\u56de\u663e\u7684\u6587\u4ef6\u8bfb\u53d6\u53ef\u4ee5\u5229\u7528ftp\u534f\u8bae\u8fdb\u884c\u5916\u5e26\u653b\u51fb\uff08\u90e8\u5206\u7248\u672c\u7684Java\u5373\u4f7f\u4f7f\u7528ftp\u534f\u8bae\u4e5f\u65e0\u6cd5\u8bfb\u53d6\u591a\u884c\u6587\u4ef6<\/p>\n\n\n\n<p>\u6ce8\u610f\u80fd\u591f\u53d1\u8d77HTTP\u8bf7\u6c42\u7684\u7c7b\u53ca\u51fd\u6570\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>HttpURLConnection.getInputStream<\/li>\n\n\n\n<li>URLConnection.getInputStream<\/li>\n\n\n\n<li>HttpClient.execute<\/li>\n\n\n\n<li>OkHttpClient.newCall.execute<\/li>\n\n\n\n<li>Request.Get.execute<\/li>\n\n\n\n<li>Request.Post.execute<\/li>\n\n\n\n<li>[url].openStream()\u65b9\u6cd5<\/li>\n\n\n\n<li>ImageIO.read<\/li>\n<\/ul>\n\n\n\n<p>\u82e5\u60f3\u652f\u6301sun.net.www.protocol\u4e2d\u7684\u6240\u6709\u534f\u8bae\u5219\u53ea\u80fd\u4f7f\u7528\u65b9\u6cd5\uff1aURLConnection\u3001URL<\/p>\n\n\n\n<p>\u82e5\u53d1\u8d77\u7684\u7f51\u7edc\u8bf7\u6c42\u662f\u5e26HTTP\u7684\uff0c\u90a3\u4e48\u5176\u5c06\u53ea\u652f\u6301HTTP\u3001HTTPS\u534f\u8bae\uff1aHttpURLConnection\u3001HttpClient\u3001OkHttpClient.newCall.execute<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">9.SpEL\u8868\u8fbe\u5f0f\u6ce8\u5165\u6f0f\u6d1e<\/h3>\n\n\n\n<p>SpEL\u8868\u8fbe\u5f0f\u8bed\u6cd5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4f7f\u7528\u91cf\u8868\u8fbe\u5f0f\u8bed\u6cd5\uff1a&#8221;#{&#8216;Hello World&#8217;}&#8221;<\/li>\n\n\n\n<li>\u4f7f\u7528Java\u4ee3\u7801new\/instanceof\uff1aExpression exp = parser.parseExpression(&#8220;new Spring(&#8216;Hello World&#8217;)&#8221;);<\/li>\n\n\n\n<li>\u4f7f\u7528T(Type)\u6765\u8868\u793ajava.lang.Class\u5b9e\u4f8b\uff1aparser.parseExpression(&#8220;T(Integer).MAX_VALUE&#8221;);<\/li>\n<\/ul>\n\n\n\n<p>SpEL\u4e2d\u53ef\u4ee5\u4f7f\u7528#bean_id\u6765\u83b7\u53d6\u5bb9\u5668\u5185\u7684\u53d8\u91cf\u3002\u540c\u65f6\uff0c\u5b58\u5728\u4e24\u4e2a\u7279\u6b8a\u7684\u53d8\u91cf #this\u3001#root\uff0c\u5206\u522b\u7528\u6765\u8868\u793a\u4f7f\u7528\u5f53\u524d\u7684\u4e0a\u4e0b\u6587\u548c\u5f15\u7528\u5bb9\u5668\u7684root\u5bf9\u8c61<\/p>\n\n\n\n<p>SpEL\u53ef\u4ee5\u4f7f\u7528T()\u64cd\u4f5c\u7b26\u58f0\u660e\u7279\u5b9a\u7684Java\u7c7b\u578b\uff0c\u4e00\u822c\u7528\u6765\u8bbf\u95eeJava\u7c7b\u578b\u4e2d\u7684\u9759\u6001\u5c5e\u6027\u6216\u9759\u6001\u65b9\u6cd5\u3002\u62ec\u53f7\u4e2d\u9700\u8981\u5305\u542b\u7c7b\u540d\u7684\u5168\u9650\u5b9a\u540d\uff0c\u4e5f\u5c31\u662f\u5305\u540d\u52a0\u4e0a\u7c7b\u540d\u3002\u552f\u4e00\u4f8b\u5916\u7684\u662fSpEL\u5185\u7f6e\u4e86java.lang\u5305\u4e0b\u7684\u7c7b\u58f0\u660e\uff0c\u4f8b\u5982java.lang.String\u53ef\u4ee5\u901a\u8fc7T(String)\u8bbf\u95ee\u800c\u4e0d\u9700\u8981\u4f7f\u7528\u5168\u9650\u5b9a\u540d<\/p>\n\n\n\n<p>\u4f7f\u7528new\u53ef\u4ee5\u76f4\u63a5\u5728SpEL\u4e2d\u521b\u5efa\u5b9e\u4f8b\uff0c\u521b\u5efa\u5b9e\u4f8b\u7684\u7c7b\u8981\u901a\u8fc7\u5168\u9650\u5b9a\u540d\u8fdb\u884c\u8bbf\u95ee\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ExpressionParser parser = new SpelExpressionParser();\nExpression exp = parser.parseExpression(\"new.java.util.Date()\");\nDate value = (Date)exp.getValue();\nSystem.out.println(value);<\/code><\/pre>\n\n\n\n<p class=\"has-vivid-red-color has-text-color has-link-color wp-elements-88bb68e3de8d7b7df2d80b5a041be433\"><strong>\u4ea7\u751fSpEL\u8868\u8fbe\u5f0f\u6ce8\u5165\u7684\u5927\u524d\u63d0\u662f\u5b58\u5728SpEL\u7684\u76f8\u5173\u5e93\uff0c\u56e0\u6b64\u53ef\u4ee5\u9488\u5bf9\u4ee5\u4e0b\u5173\u952e\u5b57\u8fdb\u884c\u641c\u7d22\uff0c\u5e76\u8ddf\u8e2a\u53c2\u6570\u662f\u5426\u53ef\u63a7\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>org.springframework.expression.spel.standard<\/li>\n\n\n\n<li>SpelExpressionParser<\/li>\n\n\n\n<li>parseExpression<\/li>\n\n\n\n<li>expression.getValue()<\/li>\n\n\n\n<li>expression.setValue()<\/li>\n<\/ul>\n\n\n\n<p>SpEL\u6f0f\u6d1e\u6210\u56e0\uff1aSpring\u4e3a\u89e3\u6790SpEL\u63d0\u4f9b\u4e86\u4e24\u5957\u63a5\u53e3\uff0c\u5206\u522b\u662fSimpleEvaluationContext\u548cStandardEvaluationContext\u3002SimpleEvaluationContext\u4ec5\u652f\u6301SpEL\u8bed\u6cd5\u7684\u5b50\u96c6\uff0c\u629b\u5f03\u4e86Java\u7c7b\u578b\u5f15\u7528\u3001\u6784\u9020\u51fd\u6570\u53cabeam\u5f15\u7528\u76f8\u5bf9\u5b89\u5168\u3002\u800cStandardEvaluationContext\u5305\u542b\u4e86SpEL\u6240\u6709\u529f\u80fd\uff0c\u4e14\u5728\u4e0d\u6307\u5b9aEvaluationContext\u60c5\u51b5\u4e0b\u9ed8\u8ba4\u91c7\u7528StandardEvaluationContext\uff1b\u5f88\u5927\u4e00\u90e8\u5206\u5f00\u53d1\u4eba\u5458\u672a\u5bf9\u7528\u6237\u8f93\u5165\u8fdb\u884c\u5904\u7406\u5c31\u76f4\u63a5\u901a\u8fc7\u89e3\u6790\u5f15\u64ce\u5bf9SpEL\u7ee7\u7eed\u89e3\u6790<\/p>\n\n\n\n<p>\u901a\u8fc7\u63d2\u5165\u4ee5\u4e0bPOC\u68c0\u67e5\u662f\u5426\u5b58\u5728SpEL\u8868\u8fbe\u5f0f\u6ce8\u5165\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>${4*4}<\/li>\n\n\n\n<li>T(Thread).sleep(10000)<\/li>\n\n\n\n<li>T(java.lang.Runtime).getRuntime().exec(&#8216;command&#8217;)<\/li>\n\n\n\n<li>T(java.lang.Runtime).getRuntime().exec(&#8220;nslookup baidu.com&#8221;)<\/li>\n\n\n\n<li>new java.lang.ProcessBuilder(&#8220;command&#8221;).start()<\/li>\n\n\n\n<li>new java.lang.ProcessBuilder({&#8216;nslookup  baidu.com&#8217;}).start()<\/li>\n\n\n\n<li>#this.getClass().forName(&#8216;java.lang.Runtime&#8217;).getRuntime().exec(&#8216;nslookup baidu.com&#8217;)<\/li>\n<\/ul>\n\n\n\n<p>\u5bf9\u4e8e\u5e38\u89c1\u9ed1\u540d\u5355\u8fc7\u6ee4\u53ef\u4ee5\u5229\u7528\u4e24\u79cd\u65b9\u5f0f\u6784\u9020payload\uff1a\u5229\u7528\u53cd\u5c04\u4e0e\u62c6\u5206\u5173\u952e\u5b57\u6784\u9020\u3001\u5229\u7528ScriptEngineManager\u6784\u9020<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">10.Java\u53cd\u5e8f\u5217\u5316<\/h3>\n\n\n\n<p>\u5ba1\u8ba1\u5173\u952e\u5b57\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>ObjectInputStream.readObject<\/li>\n\n\n\n<li>ObjectInputStream.readUnshared<\/li>\n\n\n\n<li>XMLDecoder.readObject<\/li>\n\n\n\n<li>Yaml.load<\/li>\n\n\n\n<li>XStream.fromXML<\/li>\n\n\n\n<li>ObjectMapper.readValue<\/li>\n\n\n\n<li>JSON.parseObject<\/li>\n<\/ul>\n\n\n\n<p>\u641c\u7d22\u5173\u952e\u5b57\u627e\u5230\u5b58\u5728\u53cd\u5e8f\u5217\u5316\u64cd\u4f5c\u7684\u6587\u4ef6\u65f6\uff0c\u8003\u8651\u53c2\u6570\u662f\u5426\u53ef\u63a7\uff0c\u4ee5\u53ca\u5f15\u7528\u7684Class Path\u662f\u5426\u5305\u542bApache Commons Collections\u7b49\u5371\u9669\u5e93\uff08ysoserial\u6240\u652f\u6301\u7684\u5176\u4ed6\u5e93\u4ea6\u53ef\uff09\u3002\u540c\u65f6\u6ee1\u8db3\u4ee5\u4e0a\u6761\u4ef6\u5219\u901a\u8fc7ysoserial\u5de5\u5177\u751f\u6210payload\u76f4\u63a5\u6253\u3002\u4e0d\u652f\u6301\u5371\u9669\u5e93\u5219\u5c1d\u8bd5\u901a\u8fc7\u6784\u9020\u5229\u7528\u94fe\u63a5\u5b9e\u73b0\u4efb\u610f\u4ee3\u7801\u6267\u884c<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">11.SSTI\u6a21\u677f\u6ce8\u5165\u6f0f\u6d1e<\/h3>\n\n\n\n<p>Java\u4e2d\u5e38\u89c1\u6a21\u677f\u5f15\u64ce\uff1aXMLTemplate\u3001Velocity\u3001CommonTemplate\u3001FreeMarker\u3001Smarty4j\u3001TemplateEngine\u7b49\uff0cVelocity\u4f7f\u7528\u8f83\u591a<\/p>\n\n\n\n<p>\u5728Velocity\u4e2d\u4ee5#\u6765\u6807\u8bc6Velocity\u7684\u811a\u672c\u8bed\u53e5\u4f8b\u5982#set\u3001#if\u3001#else\u3001#\u6069\u5178\u3001#foreach\u3001#iinclude\u3001#parse\u7b49<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#if($msg.img)\n&lt;img src=\"$msg.imgs\" border=0>\n#else\n&lt;img src=\"qccp.jpg\">\n#end<\/code><\/pre>\n\n\n\n<p>$\u7528\u6765\u6807\u8bc6\u4e00\u4e2a\u5bf9\u8c61\uff0c\u4e00\u65e6\u53ef\u4ee5\u8c03\u7528\u5bf9\u8c61\u5219\u6709\u529e\u6cd5\u6784\u9020\u547d\u4ee4\u6267\u884c\u8bed\u53e5\uff1a$e.getClass().forName(&#8220;java.lang.Runtime&#8221;).getMethod(&#8220;getRuntime&#8221;,null).invoke(null,null).exec()<\/p>\n\n\n\n<p>\u5728Velocity\u6a21\u677f\u6ce8\u5165\u4e2d\uff0c\u5982\u679c\u65e0\u6cd5\u8fdb\u884c\u547d\u4ee4\u6267\u884c\uff0c\u5f80\u5f80\u53ef\u4ee5\u901a\u8fc7\u4fee\u6539Cookie\u6765\u8fdb\u884c\u7279\u6743\u5347\u7ea7\uff0c\u4f8b\u5982\uff1a$session.setAttribute(&#8220;IS_ADMIN&#8221;,&#8221;1&#8243;)<\/p>\n\n\n\n<p>\u5728\u6f0f\u6d1e\u4e0d\u5b58\u5728\u56de\u663e\u7684\u60c5\u51b5\u4e14\u5bb9\u5668\u4e3aTomcat7\u65f6\uff0c\u53ef\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\u6784\u9020\u4e00\u4e2a\u6709\u56de\u663e\u7684\u547d\u4ee4\u6267\u884c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#set($str=$class.inspect(\"java.lang.String\").type)\n#set($chr=$class.inspect(\"java.lang.Character\").type)\n#set($ex=$class.inspect(\"java.lang.Runtime\").type.getRuntime().exec(\"whoami\"))\n$ex.waitFor()\n#set($out=$ex.getInputStream())\n#foreach($i in &#91;1..$out.available()])\n$str.valueOf($chr.toChars($out.read()))\n#end<\/code><\/pre>\n\n\n\n<p>\u5ba1\u8ba1\u5173\u952e\u5b57\uff1a\u641c\u7d22\u5bf9\u4e8e\u6a21\u677f\u5f15\u64ce\u7684\u5173\u952e\u5b57\uff0c\u4f8b\u5982velocity\u5bf9\u5e94\u7684org.apache.velocity<\/p>\n\n\n\n<h3 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