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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:envoyproxy:envoy:1.29.0:*:*:*:*:*:*:*", "matchCriteriaId": "05BAA468-C06D-4340-B721-6B63AA486791", "vulnerable": true}, {"criteria": "cpe:2.3:a:envoyproxy:envoy:1.29.1:*:*:*:*:*:*:*", "matchCriteriaId": "A11D3816-87DB-4BC6-AC8A-9DE8D83764DC", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Envoy is a cloud-native, open-source edge and service proxy. In versions 1.29.0 and 1.29.1, theEnvoy HTTP/2 protocol stack is vulnerable to the flood of CONTINUATION frames. Envoy's HTTP/2 codec does not reset a request when header map limits have been exceeded. This allows an attacker to send an sequence of CONTINUATION frames without the END_HEADERS bit set causing unlimited memory consumption. This can lead to denial of service through memory exhaustion. Users should upgrade to versions 1.29.2 to mitigate the effects of the CONTINUATION flood. Note that this vulnerability is a regression in Envoy version 1.29.0 and 1.29.1 only. As a workaround, downgrade to version 1.28.1 or earlier or disable HTTP/2 protocol for downstream connections."}, {"lang": "es", "value": "Envoy es un proxy de servicio y borde de c\u00f3digo abierto y nativo de la nube. En las versiones 1.29.0 y 1.29.1, la pila de protocolos Envoy HTTP/2 es vulnerable a la avalancha de tramas de CONTINUACI\u00d3N. El c\u00f3dec HTTP/2 de Envoy no restablece una solicitud cuando se exceden los l\u00edmites del mapa de encabezado. Esto permite a un atacante enviar una secuencia de tramas CONTINUACI\u00d3N sin que el bit END_HEADERS est\u00e9 configurado, lo que provoca un consumo ilimitado de memoria. Esto puede provocar una denegaci\u00f3n de servicio por agotamiento de la memoria. Los usuarios deben actualizar a las versiones 1.29.2 para mitigar los efectos de la inundaci\u00f3n de CONTINUACI\u00d3N. Tenga en cuenta que esta vulnerabilidad es una regresi\u00f3n en Envoy versi\u00f3n 1.29.0 y 1.29.1 \u00fanicamente. Como workaround, baje a la versi\u00f3n 1.28.1 o anterior o desactive el protocolo HTTP/2 para conexiones descendentes."}], "id": "CVE-2024-27919", "lastModified": "2025-09-04T19:42:07.203", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2024-04-04T15:15:38.207", "references": [{"source": "security-advisories@github.com", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2024/04/03/16"}, {"source": "security-advisories@github.com", "tags": ["Mailing List"], "url": "http://www.openwall.com/lists/oss-security/2024/04/05/3"}, {"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/envoyproxy/envoy/commit/57a02565532c18eb9df972a3e8974be3ae59f2d5"}, {"source": "security-advisories@github.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-gghf-vfxp-799r"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2024/04/03/16"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List"], "url": "http://www.openwall.com/lists/oss-security/2024/04/05/3"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://github.com/envoyproxy/envoy/commit/57a02565532c18eb9df972a3e8974be3ae59f2d5"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-gghf-vfxp-799r"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-390"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{"acknowledgement": "Red Hat would like to thank Bartek Nowotarski (nowotarski.info) for reporting this issue.", "bugzilla": {"description": "envoy: CONTINUATION frames which enable DoS", "id": "2269444", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2269444"}, "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-400", "details": ["Envoy is a cloud-native, open-source edge and service proxy. In versions 1.29.0 and 1.29.1, theEnvoy HTTP/2 protocol stack is vulnerable to the flood of CONTINUATION frames. Envoy's HTTP/2 codec does not reset a request when header map limits have been exceeded. This allows an attacker to send an sequence of CONTINUATION frames without the END_HEADERS bit set causing unlimited memory consumption. This can lead to denial of service through memory exhaustion. Users should upgrade to versions 1.29.2 to mitigate the effects of the CONTINUATION flood. Note that this vulnerability is a regression in Envoy version 1.29.0 and 1.29.1 only. As a workaround, downgrade to version 1.28.1 or earlier or disable HTTP/2 protocol for downstream connections.", "A vulnerability was found in how Envoy Proxy implements the oghttp codec. There are insufficient limitations placed on the amount of CONTINUATION frames that can be sent within a single stream. This issue could allow an unauthenticated remote attacker to send packets to vulnerable servers, which could use up memory resources to cause a Denial of Service."], "mitigation": {"lang": "en:us", "value": "Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible."}, "name": "CVE-2024-27919", "package_state": [{"cpe": "cpe:/a:redhat:openshift_custom_metrics_autoscaler:2", "fix_state": "Not affected", "package_name": "custom-metrics-autoscaler/custom-metrics-autoscaler-rhel8", "product_name": "Custom Metric Autoscaler operator for Red Hat Openshift"}, {"cpe": "cpe:/a:redhat:logging:5", "fix_state": "Not affected", "package_name": "openshift-logging/logging-loki-rhel8", "product_name": "Logging Subsystem for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:lvms:4", "fix_state": "Not affected", "package_name": "lvms4/topolvm-rhel9", "product_name": "Logical Volume Manager Storage"}, {"cpe": "cpe:/a:redhat:migration_toolkit_applications:6", "fix_state": "Not affected", "package_name": "mta/mta-hub-rhel8", "product_name": "Migration Toolkit for Applications 6"}, {"cpe": "cpe:/a:redhat:rhmt", "fix_state": "Not affected", "package_name": "rhmtc/openshift-migration-velero-plugin-for-gcp-rhel8", "product_name": "Migration Toolkit for Containers"}, {"cpe": "cpe:/a:redhat:openshift_api_data_protection:1", "fix_state": "Not affected", "package_name": "oadp/oadp-velero-plugin-for-gcp-rhel9", "product_name": "OpenShift API for Data Protection"}, {"cpe": "cpe:/a:redhat:openshift_api_data_protection:1", "fix_state": "Not affected", "package_name": "oadp/oadp-velero-rhel8", "product_name": "OpenShift API for Data Protection"}, {"cpe": "cpe:/a:redhat:serverless:1", "fix_state": "Not affected", "package_name": "openshift-serverless-1/eventing-mtping-rhel8", "product_name": "OpenShift Serverless"}, {"cpe": "cpe:/a:redhat:service_mesh:2", "fix_state": "Not affected", "package_name": "openshift-service-mesh/istio-cni-rhel8", "product_name": "OpenShift Service Mesh 2"}, {"cpe": "cpe:/a:redhat:acm:2", "fix_state": "Not affected", "package_name": "rhacm2/acm-grafana-rhel8", "product_name": "Red Hat Advanced Cluster Management for Kubernetes 2"}, {"cpe": "cpe:/a:redhat:acm:2", "fix_state": "Not affected", "package_name": "rhacm2/management-ingress-rhel8", "product_name": "Red Hat Advanced Cluster Management for Kubernetes 2"}, {"cpe": "cpe:/a:redhat:ceph_storage:5", "fix_state": "Not affected", "package_name": "rhceph/rhceph-5-dashboard-rhel8", "product_name": "Red Hat Ceph Storage 5"}, {"cpe": "cpe:/a:redhat:ceph_storage:6", "fix_state": "Not affected", "package_name": "rhceph/rhceph-6-dashboard-rhel9", "product_name": "Red Hat Ceph Storage 6"}, {"cpe": "cpe:/a:redhat:ceph_storage:7", "fix_state": "Not affected", "package_name": "rhceph/grafana-rhel9", "product_name": "Red Hat Ceph Storage 7"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift4/ose-contour-rhel8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift4/ose-prometheus", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift-selinuxd-container", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift_container_storage:4", "fix_state": "Not affected", "package_name": "ocs4/cephcsi-rhel8", "product_name": "Red Hat Openshift Container Storage 4"}, {"cpe": "cpe:/a:redhat:openshift_data_foundation:4", "fix_state": "Not affected", "package_name": "odf4/odf-topolvm-rhel8", "product_name": "Red Hat Openshift Data Foundation 4"}, {"cpe": "cpe:/a:redhat:openshift_data_science", "fix_state": "Not affected", "package_name": "rhods/odh-ml-pipelines-cache-rhel8", "product_name": "Red Hat OpenShift Data Science (RHODS)"}, {"cpe": "cpe:/a:redhat:openshift_data_science", "fix_state": "Not affected", "package_name": "rhods/odh-operator-base-rhel8", "product_name": "Red Hat OpenShift Data Science (RHODS)"}, {"cpe": "cpe:/a:redhat:openshift_devspaces:3:", "fix_state": "Not affected", "package_name": "devspaces/devspaces-rhel8-operator", "product_name": "Red Hat OpenShift Dev Spaces"}, {"cpe": "cpe:/a:redhat:openshift_distributed_tracing:2", "fix_state": "Not affected", "package_name": "rhosdt/tempo-gateway-rhel8", "product_name": "Red Hat OpenShift distributed tracing 2"}, {"cpe": "cpe:/a:redhat:openshift_distributed_tracing:3", "fix_state": "Not affected", "package_name": "rhosdt/opentelemetry-rhel8-operator", "product_name": "Red Hat OpenShift distributed tracing 3"}, {"cpe": "cpe:/a:redhat:openshift_sandboxed_containers:1", "fix_state": "Not affected", "package_name": "openshift-sandboxed-containers/osc-rhel8-operator", "product_name": "Red Hat Openshift Sandboxed Containers"}, {"cpe": "cpe:/a:redhat:openstack:16.2", "fix_state": "Not affected", "package_name": "osp-director-provisioner-container", "product_name": "Red Hat OpenStack Platform 16.2"}], "public_date": "2024-04-03T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-27919\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-27919\nhttps://github.com/envoyproxy/envoy/security/advisories/GHSA-gghf-vfxp-799r\nhttps://nowotarski.info/http2-continuation-flood/\nhttps://www.kb.cert.org/vuls/id/421644"], "statement": "No Red Hat products ship a vulnerable version of Envoy.", "threat_severity": "Important"}