Another late-night emergency, another critical CVE with maximum CVSS score. Apache Log4j 2.x before 2.15.0 allows remote code execution via JNDI. If you haven't patched yet, sound the alarms now.
SOC Team Checklist- Scan SIEM logs for suspicious LDAP/JNDI requests (filter for
${jndi:})- Upgrade Log4j to 2.16.0 (or at least 2.15.0 with
log4j2.formatMsgNoLookups=true)- Scan infrastructure using tools like log4j-scan or JNDIExploit
Pay special attention to services logging user-agent/headers — common attack vectors.Fintech teams already report mass scanning attempts. If you have a WAF, verify JNDI injection blocking rules.
- Scan SIEM logs for suspicious LDAP/JNDI requests (filter for
${jndi:})- Upgrade Log4j to 2.16.0 (or at least 2.15.0 with
log4j2.formatMsgNoLookups=true)- Scan infrastructure using tools like log4j-scan or JNDIExploit
Pay special attention to services logging user-agent/headers — common attack vectors.
Fintech teams already report mass scanning attempts. If you have a WAF, verify JNDI injection blocking rules.
- Upgrade Log4j to 2.16.0 (or at least 2.15.0 with