Multiple Log4j scanners released by CISA, CrowdStrike

CISA released its own Log4J scanner this week alongside a host of other scanners published by cybersecurity companies and researchers.

The open-sourced Log4j scanner is derived from scanners created by other members of the open source community, and it is designed to help organizations identify potentially vulnerable web services affected by the Log4j vulnerabilities.

CISA said it modified a Log4J scanner created by security company FullHunt and got help from other researchers like Philipp Klaus and Moritz Bechler. The repository provides a scanning solution for CVE-2021-44228 and CVE-2021-45046. CISA said it supports DNS callback for vulnerability discovery and validation while providing fuzzing for HTTP POST Data parameters, fuzzing for JSON data parameters, and support for lists of URLs.