Cloudflare

CVE-2021-44228 - Log4j RCE 0-day mitigation

Dec 10, 2021Gabriel Gabor, Andre Bluehs
CVE-2021-44228 - Log4j RCE 0-day mitigation
SummaryAI, from the source post

Deployed three new WAF rules (IDs 100514/6b1cc72dff97464695a474430f12, 100515/0c054d4e4dd5455c9ff8f01efe5abb10, 100516/5f6744fa026a4638bda5b3d7d5e015dd) to mitigate the Log4j RCE vulnerability (CVE-2021-44228). These rules inspect HTTP headers, body, and URL for exploit patterns and are configured with a default BLOCK action. The update indicates that these rules have been further hardened with a default action of BLOCK.

More from the Website Security & Threat Management trail