Inconsistent interpretation of HTTP/2 requests in Amazon CloudFront with AWS WAF enabled might allow remote actors to bypass AWS WAF managed rule body inspection via crafted HTTP/2 requests that fragment the request body across frames so that only a partial body is inspected.
This issue was remediated server-side. No customer action is required.
Amazon AWS CloudFront TLSv1.22019 allows TLSECDHERSAWITHAES128CBCSHA256 and TLSECDHERSAWITHAES256CBCSHA384, which some entities consider to be weak ciphers.