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{"bugzilla": {"description": "netty: netty-codec-http2: Netty MadeYouReset HTTP/2 DDoS Vulnerability", "id": "2388252", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2388252"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-770", "details": ["Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.124.Final and 4.2.4.Final, Netty is vulnerable to MadeYouReset DDoS. This is a logical vulnerability in the HTTP/2 protocol, that uses malformed HTTP/2 control frames in order to break the max concurrent streams limit - which results in resource exhaustion and distributed denial of service. This issue has been patched in versions 4.1.124.Final and 4.2.4.Final."], "mitigation": {"lang": "en:us", "value": "No mitigation is currently available that meets Red Hat Product Security\u2019s standards for usability, deployment, applicability, or stability."}, "name": "CVE-2025-55163", "package_state": [{"cpe": "cpe:/a:redhat:amq_clients:2023", "fix_state": "Affected", "package_name": "netty-codec-http2", "product_name": "AMQ Clients"}, {"cpe": "cpe:/a:redhat:cryostat:4", "fix_state": "Affected", "package_name": "netty-codec-http2", "product_name": "Cryostat 4"}, {"cpe": "cpe:/a:redhat:logging:5", "fix_state": "Affected", "package_name": "netty-codec-http2", "product_name": "Logging Subsystem for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:serverless:1", "fix_state": "Will not fix", "package_name": "openshift-serverless-1/kn-ekb-dispatcher-rhel8", "product_name": "OpenShift Serverless"}, {"cpe": "cpe:/a:redhat:serverless:1", "fix_state": "Will not fix", "package_name": "openshift-serverless-1/kn-ekb-kafka-controller-rhel8", "product_name": "OpenShift Serverless"}, {"cpe": "cpe:/a:redhat:serverless:1", "fix_state": "Will not fix", "package_name": "openshift-serverless-1/kn-ekb-post-install-rhel8", "product_name": "OpenShift Serverless"}, {"cpe": "cpe:/a:redhat:serverless:1", "fix_state": "Will not fix", "package_name": "openshift-serverless-1/kn-ekb-receiver-rhel8", "product_name": "OpenShift Serverless"}, {"cpe": "cpe:/a:redhat:serverless:1", "fix_state": "Will not fix", "package_name": "openshift-serverless-1/kn-ekb-webhook-kafka-rhel8", "product_name": "OpenShift Serverless"}, {"cpe": "cpe:/a:redhat:serverless:1", "fix_state": "Will not fix", "package_name": "openshift-serverless-1/kn-eventing-integrations-aws-ddb-streams-source-rhel8", "product_name": "OpenShift Serverless"}, {"cpe": "cpe:/a:redhat:serverless:1", "fix_state": "Will not fix", "package_name": "openshift-serverless-1/kn-eventing-integrations-aws-s3-sink-rhel8", "product_name": "OpenShift Serverless"}, {"cpe": "cpe:/a:redhat:serverless:1", "fix_state": "Will not fix", "package_name": "openshift-serverless-1/kn-eventing-integrations-aws-s3-source-rhel8", "product_name": "OpenShift Serverless"}, {"cpe": "cpe:/a:redhat:serverless:1", "fix_state": "Will not fix", "package_name": "openshift-serverless-1/kn-eventing-integrations-aws-sns-sink-rhel8", "product_name": "OpenShift Serverless"}, {"cpe": "cpe:/a:redhat:serverless:1", "fix_state": "Will not fix", "package_name": "openshift-serverless-1/kn-eventing-integrations-aws-sqs-sink-rhel8", "product_name": "OpenShift Serverless"}, {"cpe": "cpe:/a:redhat:serverless:1", "fix_state": "Will not fix", "package_name": "openshift-serverless-1/kn-eventing-integrations-aws-sqs-source-rhel8", "product_name": "OpenShift Serverless"}, {"cpe": "cpe:/a:redhat:serverless:1", "fix_state": "Will not fix", "package_name": "openshift-serverless-1/kn-eventing-integrations-log-sink-rhel8", "product_name": "OpenShift Serverless"}, {"cpe": "cpe:/a:redhat:serverless:1", "fix_state": "Will not fix", "package_name": "openshift-serverless-1/kn-eventing-integrations-timer-source-rhel8", "product_name": "OpenShift Serverless"}, {"cpe": "cpe:/a:redhat:serverless:1", "fix_state": "Will not fix", "package_name": "openshift-serverless-1/kn-eventing-integrations-transform-jsonata-rhel8", "product_name": "OpenShift Serverless"}, {"cpe": "cpe:/a:redhat:amq_broker:7", "fix_state": "Affected", "package_name": "netty-codec-http2", "product_name": "Red Hat AMQ Broker 7"}, {"cpe": "cpe:/a:redhat:camel_quarkus:3", "fix_state": "Affected", "package_name": "netty-codec-http2", "product_name": "Red Hat build of Apache Camel 4 for Quarkus 3"}, {"cpe": "cpe:/a:redhat:camel_spring_boot:4", "fix_state": "Affected", "package_name": "netty-codec-http2", "product_name": "Red Hat build of Apache Camel for Spring Boot 4"}, {"cpe": "cpe:/a:redhat:apache_camel_hawtio:4", "fix_state": "Affected", "package_name": "netty-codec-http2", "product_name": "Red Hat build of Apache Camel - 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It is simple to exploit because it does not require authentication and could result in a Denial of Service (DoS). While some DoS flaws are classified as Moderate, \u201cMadeYouReset\u201d is Important because of the limited barriers (no specialized tooling or advanced scripting) to exploitation which directly impacts service availability. The vulnerability arises from an implementation weakness in HTTP/2 stream reset handling \u2014 malformed client requests can trigger server-side resets without incrementing abuse counters, allowing an attacker to bypass built-in request throttling and overhead limits. Since these resets consume CPU and memory resources and can be generated at scale over a single TCP/TLS connection, a remote attacker could exhaust server capacity quickly, impacting all legitimate clients.", "threat_severity": "Important"}