Programmer DD

Dec 19, 2021 · Information Security

How CodeQL and LGTM Uncovered a Log4j2 0‑Day: Inside the CWE‑074 Rule

Using LGTM’s online CodeQL scanner, the author demonstrates how a 2020 CWE‑074 rule can automatically detect a Log4j2 0‑day vulnerability, explains the rule’s data‑flow logic, and provides step‑by‑step instructions for scanning open‑source projects and responsibly handling discovered exploits.