{"answers":{"affected":"1 open source package ship an affected version, including envoy. It affects 2 products.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-35945 exists.","fix":"Upgrade envoy to a fixed version for your release line: 1.23.11, 1.24.9, 1.25.8 or 1.26.3.","what":"CVE-2023-35945 is a high-severity denial of service vulnerability in Envoyproxy Envoy, published on 13 Jul 2023. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-35945 and fix it if it is affected.\n\nWhat it is: CVE-2023-35945 is a high-severity denial of service vulnerability in Envoyproxy Envoy, published on 13 Jul 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-35945 exists.\n\nAffected packages and fixed versions:\n- envoy (Bitnami): affected all versions; fixed in 1.23.11, 1.24.9, 1.25.8, 1.26.3\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2023-35945/ (Markdown: https://insights.sbomify.com/CVE-2023-35945/index.md)","id":"CVE-2023-35945","markdown":"https://insights.sbomify.com/CVE-2023-35945/index.md","name":"CVE-2023-35945","record":{"aliases":["ALPINE-CVE-2023-35945","AZL-27650","AZL-27667","AZL-27682","AZL-27683","BIT-envoy-2023-35945","CLSA-2026-1777947331","CLSA-2026-1778148827","GHSA-jfxv-29pc-x22r","JLSEC-2026-2","OESA-2023-1506","SUSE-SU-2023:3842-1","SUSE-SU-2023:3997-1","SUSE-SU-2023:4102-1","openSUSE-SU-2024:13062-1"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Envoy proxy","requires_auth":"none","summary":"Attackers can cause memory exhaustion and denial of service in Envoy by sending specific HTTP/2 frames, requiring an upgrade to patched versions.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"envoy","vendor":"envoyproxy"},{"product":"nghttp2","vendor":"nghttp2"}],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-459","name":"Incomplete Cleanup"},{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"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.","ecosystems":["Bitnami","SUSE:Enterprise Storage 7.1","SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS","SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS","SUSE:Linux Enterprise High Performance Computing 15 SP3-ESPOS","SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS","SUSE:Linux Enterprise Micro 5.1","SUSE:Linux Enterprise Micro 5.2","SUSE:Linux Enterprise Micro 5.3","SUSE:Linux Enterprise Micro 5.4","SUSE:Linux Enterprise Micro 5.5","SUSE:Linux Enterprise Module for Basesystem 15 SP4","SUSE:Linux Enterprise Module for Basesystem 15 SP5","SUSE:Linux Enterprise Server 12 SP5","SUSE:Linux Enterprise Server 15 SP1-LTSS","SUSE:Linux Enterprise Server 15 SP2-LTSS","SUSE:Linux Enterprise Server 15 SP3-LTSS","SUSE:Linux Enterprise Server for SAP Applications 12 SP5","SUSE:Linux Enterprise Server for SAP Applications 15 SP1","SUSE:Linux Enterprise Server for SAP Applications 15 SP2","SUSE:Linux Enterprise Server for SAP Applications 15 SP3","SUSE:Linux Enterprise Software Development Kit 12 SP5","SUSE:Manager Proxy 4.2","SUSE:Manager Server 4.2","openSUSE:Leap 15.4","openSUSE:Leap 15.5","openSUSE:Tumbleweed"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Envoy vulnerable to HTTP/2 memory leak in nghttp2 codec","id":"CVE-2023-35945","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"envoyproxy:envoy","products":["envoyproxy:envoy"],"type":"denial_of_service","year":"2023"},"n_packages":29,"n_references":2,"next":{"headline":"Dependency cache path traversal in Gradle","id":"CVE-2023-35946"},"packages":[{"ecosystem":"Bitnami","fixed":["1.23.11","1.24.9","1.25.8","1.26.3"],"introduced":["0","1.24.0","1.25.0","1.26.0"],"last_affected":[],"package":"envoy","purl":"pkg:bitnami/envoy","source":"BIT-envoy-2023-35945"},{"ecosystem":"SUSE:Enterprise Storage 7.1","fixed":["1.40.0-150200.9.1"],"introduced":["0"],"last_affected":[],"package":"nghttp2","purl":"pkg:rpm/suse/nghttp2\u0026distro=SUSE%20Enterprise%20Storage%207.1","source":"SUSE-SU-2023:3997-1"},{"ecosystem":"SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS","fixed":["1.40.0-150000.3.14.1"],"introduced":["0"],"last_affected":[],"package":"nghttp2","purl":"pkg:rpm/suse/nghttp2\u0026distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSS","source":"SUSE-SU-2023:4102-1"},{"ecosystem":"SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS","fixed":["1.40.0-150200.9.1"],"introduced":["0"],"last_affected":[],"package":"nghttp2","purl":"pkg:rpm/suse/nghttp2\u0026distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSS","source":"SUSE-SU-2023:3997-1"},{"ecosystem":"SUSE:Linux Enterprise High Performance Computing 15 SP3-ESPOS","fixed":["1.40.0-150200.9.1"],"introduced":["0"],"last_affected":[],"package":"nghttp2","purl":"pkg:rpm/suse/nghttp2\u0026distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-ESPOS","source":"SUSE-SU-2023:3997-1"},{"ecosystem":"SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS","fixed":["1.40.0-150200.9.1"],"introduced":["0"],"last_affected":[],"package":"nghttp2","purl":"pkg:rpm/suse/nghttp2\u0026distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-LTSS","source":"SUSE-SU-2023:3997-1"},{"ecosystem":"SUSE:Linux Enterprise Micro 5.1","fixed":["1.40.0-150200.9.1"],"introduced":["0"],"last_affected":[],"package":"nghttp2","purl":"pkg:rpm/suse/nghttp2\u0026distro=SUSE%20Linux%20Enterprise%20Micro%205.1","source":"SUSE-SU-2023:3997-1"},{"ecosystem":"SUSE:Linux Enterprise Micro 5.2","fixed":["1.40.0-150200.9.1"],"introduced":["0"],"last_affected":[],"package":"nghttp2","purl":"pkg:rpm/suse/nghttp2\u0026distro=SUSE%20Linux%20Enterprise%20Micro%205.2","source":"SUSE-SU-2023:3997-1"},{"ecosystem":"SUSE:Linux Enterprise Micro 5.3","fixed":["1.40.0-150200.9.1"],"introduced":["0"],"last_affected":[],"package":"nghttp2","purl":"pkg:rpm/suse/nghttp2\u0026distro=SUSE%20Linux%20Enterprise%20Micro%205.3","source":"SUSE-SU-2023:3997-1"},{"ecosystem":"SUSE:Linux Enterprise Micro 5.4","fixed":["1.40.0-150200.9.1"],"introduced":["0"],"last_affected":[],"package":"nghttp2","purl":"pkg:rpm/suse/nghttp2\u0026distro=SUSE%20Linux%20Enterprise%20Micro%205.4","source":"SUSE-SU-2023:3997-1"},{"ecosystem":"SUSE:Linux Enterprise Micro 5.5","fixed":["1.40.0-150200.9.1"],"introduced":["0"],"last_affected":[],"package":"nghttp2","purl":"pkg:rpm/suse/nghttp2\u0026distro=SUSE%20Linux%20Enterprise%20Micro%205.5","source":"SUSE-SU-2023:3997-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP4","fixed":["1.40.0-150200.9.1"],"introduced":["0"],"last_affected":[],"package":"nghttp2","purl":"pkg:rpm/suse/nghttp2\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP4","source":"SUSE-SU-2023:3997-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP5","fixed":["1.40.0-150200.9.1"],"introduced":["0"],"last_affected":[],"package":"nghttp2","purl":"pkg:rpm/suse/nghttp2\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP5","source":"SUSE-SU-2023:3997-1"},{"ecosystem":"SUSE:Linux Enterprise Server 12 SP5","fixed":["1.39.2-3.10.1"],"introduced":["0"],"last_affected":[],"package":"nghttp2","purl":"pkg:rpm/suse/nghttp2\u0026distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5","source":"SUSE-SU-2023:3842-1"},{"ecosystem":"SUSE:Linux Enterprise Server 15 SP1-LTSS","fixed":["1.40.0-150000.3.14.1"],"introduced":["0"],"last_affected":[],"package":"nghttp2","purl":"pkg:rpm/suse/nghttp2\u0026distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSS","source":"SUSE-SU-2023:4102-1"},{"ecosystem":"SUSE:Linux Enterprise Server 15 SP2-LTSS","fixed":["1.40.0-150200.9.1"],"introduced":["0"],"last_affected":[],"package":"nghttp2","purl":"pkg:rpm/suse/nghttp2\u0026distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSS","source":"SUSE-SU-2023:3997-1"},{"ecosystem":"SUSE:Linux Enterprise Server 15 SP3-LTSS","fixed":["1.40.0-150200.9.1"],"introduced":["0"],"last_affected":[],"package":"nghttp2","purl":"pkg:rpm/suse/nghttp2\u0026distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSS","source":"SUSE-SU-2023:3997-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 12 SP5","fixed":["1.39.2-3.10.1"],"introduced":["0"],"last_affected":[],"package":"nghttp2","purl":"pkg:rpm/suse/nghttp2\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5","source":"SUSE-SU-2023:3842-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 15 SP1","fixed":["1.40.0-150000.3.14.1"],"introduced":["0"],"last_affected":[],"package":"nghttp2","purl":"pkg:rpm/suse/nghttp2\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1","source":"SUSE-SU-2023:4102-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 15 SP2","fixed":["1.40.0-150200.9.1"],"introduced":["0"],"last_affected":[],"package":"nghttp2","purl":"pkg:rpm/suse/nghttp2\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2","source":"SUSE-SU-2023:3997-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 15 SP3","fixed":["1.40.0-150200.9.1"],"introduced":["0"],"last_affected":[],"package":"nghttp2","purl":"pkg:rpm/suse/nghttp2\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP3","source":"SUSE-SU-2023:3997-1"},{"ecosystem":"SUSE:Linux Enterprise Software Development Kit 12 SP5","fixed":["1.39.2-3.10.1"],"introduced":["0"],"last_affected":[],"package":"nghttp2","purl":"pkg:rpm/suse/nghttp2\u0026distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5","source":"SUSE-SU-2023:3842-1"},{"ecosystem":"SUSE:Manager Proxy 4.2","fixed":["1.40.0-150200.9.1"],"introduced":["0"],"last_affected":[],"package":"nghttp2","purl":"pkg:rpm/suse/nghttp2\u0026distro=SUSE%20Manager%20Proxy%204.2","source":"SUSE-SU-2023:3997-1"},{"ecosystem":"SUSE:Manager Server 4.2","fixed":["1.40.0-150200.9.1"],"introduced":["0"],"last_affected":[],"package":"nghttp2","purl":"pkg:rpm/suse/nghttp2\u0026distro=SUSE%20Manager%20Server%204.2","source":"SUSE-SU-2023:3997-1"},{"ecosystem":"openSUSE:Leap 15.4","fixed":["1.40.0-150200.9.1"],"introduced":["0"],"last_affected":[],"package":"nghttp2","purl":"pkg:rpm/opensuse/nghttp2\u0026distro=openSUSE%20Leap%2015.4","source":"SUSE-SU-2023:3997-1"},{"ecosystem":"openSUSE:Leap 15.4","fixed":["1.40.0-150200.9.1"],"introduced":["0"],"last_affected":[],"package":"nghttp2-python","purl":"pkg:rpm/opensuse/nghttp2-python\u0026distro=openSUSE%20Leap%2015.4","source":"SUSE-SU-2023:3997-1"},{"ecosystem":"openSUSE:Leap 15.5","fixed":["1.40.0-150200.9.1"],"introduced":["0"],"last_affected":[],"package":"nghttp2","purl":"pkg:rpm/opensuse/nghttp2\u0026distro=openSUSE%20Leap%2015.5","source":"SUSE-SU-2023:3997-1"},{"ecosystem":"openSUSE:Leap 15.5","fixed":["1.40.0-150200.9.1"],"introduced":["0"],"last_affected":[],"package":"nghttp2-python","purl":"pkg:rpm/opensuse/nghttp2-python\u0026distro=openSUSE%20Leap%2015.5","source":"SUSE-SU-2023:3997-1"},{"ecosystem":"openSUSE:Tumbleweed","fixed":["1.55.1-1.1"],"introduced":["0"],"last_affected":[],"package":"nghttp2","purl":"pkg:rpm/opensuse/nghttp2\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2024:13062-1"}],"prev":{"headline":"Envoy vulnerable to incorrect handling of HTTP requests and responses with mixed case schemes","id":"CVE-2023-35944"},"products":["envoy"],"published":"2023-07-13","related":[{"cvss_score":10,"headline":"Trivial authentication bypass in Envoy","id":"CVE-2022-29226","kev_date_added":null,"published":"2022-06-09"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2019-18801","kev_date_added":null,"published":"2019-12-13"},{"cvss_score":9.8,"headline":"Security feature bypass in n/a","id":"CVE-2019-18802","kev_date_added":null,"published":"2019-12-13"},{"cvss_score":8.8,"headline":"Information disclosure in n/a","id":"CVE-2020-35470","kev_date_added":null,"published":"2020-12-15"},{"cvss_score":8.6,"headline":"Envoy ext auth can be bypassed when Proxy protocol filter sets invalid UTF-8 metadata","id":"CVE-2024-23324","kev_date_added":null,"published":"2024-02-09"},{"cvss_score":8.6,"headline":"Envoy vulnerable to OAuth2 credentials exploit with permanent validity","id":"CVE-2023-35941","kev_date_added":null,"published":"2023-07-25"},{"cvss_score":8.6,"headline":"Incorrect handling of H2 GOAWAY + SETTINGS frames","id":"CVE-2021-39162","kev_date_added":null,"published":"2021-09-09"}],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"SUSE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-14","vendors":["envoyproxy"]},"summary":"Attackers can cause memory exhaustion and denial of service in Envoy by sending specific HTTP/2 frames, requiring an upgrade to patched versions.","url":"https://insights.sbomify.com/CVE-2023-35945/"}