{"api_version":"1","generated_at":"2026-04-22T21:27:35+00:00","cve":"CVE-2023-35945","urls":{"html":"https://cve.report/CVE-2023-35945","api":"https://cve.report/api/cve/CVE-2023-35945.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2023-35945","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-35945"},"summary":{"title":"CVE-2023-35945","description":"Envoy is a cloud-native high-performance edge/middle/service proxy. Envoy’s HTTP/2 codec may leak a header map and bookkeeping structures upon receiving `RST_STREAM` immediately followed by the `GOAWAY` frames from an upstream server. In nghttp2, cleanup of pending requests due to receipt of the `GOAWAY` frame skips de-allocation of the bookkeeping structure and pending compressed header. The error return [code path] is taken if connection is already marked for not sending more requests due to `GOAWAY` frame. The clean-up code is right after the return statement, causing memory leak. Denial of service through memory exhaustion. This vulnerability was patched in versions(s) 1.26.3, 1.25.8, 1.24.9, 1.23.11.","state":"PUBLIC","assigner":"security-advisories@github.com","published_at":"2023-07-13 21:15:00","updated_at":"2023-10-24 17:26:00"},"problem_types":["CWE-459"],"metrics":[],"references":[{"url":"https://github.com/nghttp2/nghttp2/blob/e7f59406556c80904b81b593d38508591bb7523a/lib/nghttp2_session.c#L3346","name":"https://github.com/nghttp2/nghttp2/blob/e7f59406556c80904b81b593d38508591bb7523a/lib/nghttp2_session.c#L3346","refsource":"MISC","tags":[],"title":"","mime":"text/plain","httpstatus":"200","archivestatus":"404"},{"url":"https://github.com/envoyproxy/envoy/security/advisories/GHSA-jfxv-29pc-x22r","name":"https://github.com/envoyproxy/envoy/security/advisories/GHSA-jfxv-29pc-x22r","refsource":"MISC","tags":[],"title":"HTTP/2 memory leak in nghttp2 codec · Advisory · envoyproxy/envoy · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-35945","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-35945","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2023","cve_id":"35945","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"envoyproxy","cpe5":"envoy","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2023","cve_id":"35945","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"nghttp2","cpe5":"nghttp2","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2023-35945","qid":"355759","title":"Amazon Linux Security Advisory for nghttp2 : ALAS-2023-1793"},{"cve":"CVE-2023-35945","qid":"355779","title":"Amazon Linux Security Advisory for nghttp2 : ALAS2-2023-2180"},{"cve":"CVE-2023-35945","qid":"355802","title":"Amazon Linux Security Advisory for nodejs : ALAS2023-2023-290"},{"cve":"CVE-2023-35945","qid":"355811","title":"Amazon Linux Security Advisory for nghttp2 : ALAS2023-2023-278"},{"cve":"CVE-2023-35945","qid":"355870","title":"Amazon Linux Security Advisory for ecs-service-connect-agent : ALAS2023-2023-300"},{"cve":"CVE-2023-35945","qid":"503044","title":"Alpine Linux Security Update for nghttp2"},{"cve":"CVE-2023-35945","qid":"503048","title":"Alpine Linux Security Update for nghttp2"},{"cve":"CVE-2023-35945","qid":"503051","title":"Alpine Linux Security Update for nghttp2"},{"cve":"CVE-2023-35945","qid":"673636","title":"EulerOS Security Update for nghttp2 (EulerOS-SA-2023-3346)"},{"cve":"CVE-2023-35945","qid":"673794","title":"EulerOS Security Update for nghttp2 (EulerOS-SA-2023-3224)"},{"cve":"CVE-2023-35945","qid":"673870","title":"EulerOS Security Update for nghttp2 (EulerOS-SA-2023-3038)"},{"cve":"CVE-2023-35945","qid":"673906","title":"EulerOS Security Update for nghttp2 (EulerOS-SA-2023-3189)"},{"cve":"CVE-2023-35945","qid":"673934","title":"EulerOS Security Update for nghttp2 (EulerOS-SA-2023-3015)"},{"cve":"CVE-2023-35945","qid":"674095","title":"EulerOS Security Update for nghttp2 (EulerOS-SA-2023-3314)"},{"cve":"CVE-2023-35945","qid":"754949","title":"SUSE Enterprise Linux Security Update for nghttp2 (SUSE-SU-2023:3842-1)"},{"cve":"CVE-2023-35945","qid":"755049","title":"SUSE Enterprise Linux Security Update for nghttp2 (SUSE-SU-2023:3997-1)"},{"cve":"CVE-2023-35945","qid":"755101","title":"SUSE Enterprise Linux Security Update for nghttp2 (SUSE-SU-2023:4102-1)"},{"cve":"CVE-2023-35945","qid":"907095","title":"Common Base Linux Mariner (CBL-Mariner) Security Update for nghttp2 (27682-1)"},{"cve":"CVE-2023-35945","qid":"907279","title":"Common Base Linux Mariner (CBL-Mariner) Security Update for cmake (27667-1)"},{"cve":"CVE-2023-35945","qid":"907304","title":"Common Base Linux Mariner (CBL-Mariner) Security Update for nodejs18 (27683-1)"},{"cve":"CVE-2023-35945","qid":"907330","title":"Common Base Linux Mariner (CBL-Mariner) Security Update for nodejs (27650-1)"}]},"source_records":{"cve_program":{"data_version":"4.0","data_type":"CVE","data_format":"MITRE","CVE_data_meta":{"ID":"CVE-2023-35945","ASSIGNER":"security-advisories@github.com","STATE":"PUBLIC"},"description":{"description_data":[{"lang":"eng","value":"Envoy is a cloud-native high-performance edge/middle/service proxy. Envoy’s HTTP/2 codec may leak a header map and bookkeeping structures upon receiving `RST_STREAM` immediately followed by the `GOAWAY` frames from an upstream server. In nghttp2, cleanup of pending requests due to receipt of the `GOAWAY` frame skips de-allocation of the bookkeeping structure and pending compressed header. The error return [code path] is taken if connection is already marked for not sending more requests due to `GOAWAY` frame. The clean-up code is right after the return statement, causing memory leak. Denial of service through memory exhaustion. This vulnerability was patched in versions(s) 1.26.3, 1.25.8, 1.24.9, 1.23.11."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-400: Uncontrolled Resource Consumption","cweId":"CWE-400"}]}]},"affects":{"vendor":{"vendor_data":[{"vendor_name":"envoyproxy","product":{"product_data":[{"product_name":"envoy","version":{"version_data":[{"version_affected":"=","version_value":">= 1.26.0, < 1.26.3"},{"version_affected":"=","version_value":">= 1.25.0, < 1.25.8"},{"version_affected":"=","version_value":">= 1.24.0, < 1.24.9"},{"version_affected":"=","version_value":">= 1.23.0, < 1.23.11"}]}}]}}]}},"references":{"reference_data":[{"url":"https://github.com/envoyproxy/envoy/security/advisories/GHSA-jfxv-29pc-x22r","refsource":"MISC","name":"https://github.com/envoyproxy/envoy/security/advisories/GHSA-jfxv-29pc-x22r"},{"url":"https://github.com/nghttp2/nghttp2/blob/e7f59406556c80904b81b593d38508591bb7523a/lib/nghttp2_session.c#L3346","refsource":"MISC","name":"https://github.com/nghttp2/nghttp2/blob/e7f59406556c80904b81b593d38508591bb7523a/lib/nghttp2_session.c#L3346"}]},"source":{"advisory":"GHSA-jfxv-29pc-x22r","discovery":"UNKNOWN"},"impact":{"cvss":[{"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"}]}},"nvd":{"publishedDate":"2023-07-13 21:15:00","lastModifiedDate":"2023-10-24 17:26:00","problem_types":["CWE-459"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*","versionStartIncluding":"1.26.0","versionEndExcluding":"1.26.3","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*","versionStartIncluding":"1.25.0","versionEndExcluding":"1.25.8","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*","versionStartIncluding":"1.24.0","versionEndExcluding":"1.24.9","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*","versionEndExcluding":"1.23.11","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:nghttp2:nghttp2:*:*:*:*:*:*:*:*","versionEndExcluding":"1.55.1","cpe_name":[]}]}]}},"legacy_mitre":{"record":null,"notes":[]}}}