{"api_version":"1","generated_at":"2026-04-23T04:10:26+00:00","cve":"CVE-2020-35498","urls":{"html":"https://cve.report/CVE-2020-35498","api":"https://cve.report/api/cve/CVE-2020-35498.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2020-35498","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-35498"},"summary":{"title":"CVE-2020-35498","description":"A vulnerability was found in openvswitch. A limitation in the implementation of userspace packet parsing can allow a malicious user to send a specially crafted packet causing the resulting megaflow in the kernel to be too wide, potentially causing a denial of service. The highest threat from this vulnerability is to system availability.","state":"PUBLIC","assigner":"secalert@redhat.com","published_at":"2021-02-11 18:15:00","updated_at":"2023-11-26 11:15:00"},"problem_types":["CWE-400"],"metrics":[],"references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1908845","name":"https://bugzilla.redhat.com/show_bug.cgi?id=1908845","refsource":"MISC","tags":["Issue Tracking","Patch","Third Party Advisory"],"title":"1908845 – (CVE-2020-35498) CVE-2020-35498 openvswitch: limitation in the OVS packet parsing in userspace leads to DoS","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.debian.org/security/2021/dsa-4852","name":"DSA-4852","refsource":"DEBIAN","tags":["Third Party Advisory"],"title":"Debian -- Security Information -- DSA-4852-1 openvswitch","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://lists.debian.org/debian-lts-announce/2021/02/msg00032.html","name":"[debian-lts-announce] 20210219 [SECURITY] [DLA 2571-1] openvswitch security update","refsource":"MLIST","tags":["Mailing List","Third Party Advisory"],"title":"[SECURITY] [DLA 2571-1] openvswitch security update","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://security.gentoo.org/glsa/202311-16","name":"GLSA-202311-16","refsource":"","tags":[],"title":"Open vSwitch: Multiple Vulnerabilities (GLSA 202311-16) — Gentoo security","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UJ4DXFJWMZ325ECZXPZOSK7BOEDJZHPR/","name":"FEDORA-2021-fba11d37ee","refsource":"","tags":[],"title":"[SECURITY] Fedora 33 Update: dpdk-20.11-1.fc33 - package-announce - Fedora Mailing-Lists","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UJ4DXFJWMZ325ECZXPZOSK7BOEDJZHPR/","name":"FEDORA-2021-fba11d37ee","refsource":"FEDORA","tags":["Third Party Advisory"],"title":"[SECURITY] Fedora 33 Update: dpdk-20.11-1.fc33 - package-announce - Fedora Mailing-Lists","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.openwall.com/lists/oss-security/2021/02/10/4","name":"https://www.openwall.com/lists/oss-security/2021/02/10/4","refsource":"MISC","tags":["Mailing List","Patch","Third Party Advisory"],"title":"oss-security - CVE-2020-35498: Open vSwitch: Packet parsing vulnerability","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-35498","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-35498","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2020","cve_id":"35498","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"debian","cpe5":"debian_linux","cpe6":"10.0","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"35498","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"debian","cpe5":"debian_linux","cpe6":"9.0","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"35498","vulnerable":"1","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"debian","cpe5":"debian_linux","cpe6":"10.0","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"35498","vulnerable":"1","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"debian","cpe5":"debian_linux","cpe6":"9.0","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"35498","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"fedoraproject","cpe5":"fedora","cpe6":"33","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"35498","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"openvswitch","cpe5":"openvswitch","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"35498","vulnerable":"1","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"openvswitch","cpe5":"openvswitch","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2020-35498","qid":"174615","title":"SUSE Enterprise Linux Security Update for openvswitch (SUSE-SU-2021:0439-1)"},{"cve":"CVE-2020-35498","qid":"239427","title":"Red Hat Update for Red Hat OpenStack Platform 13.0 (RHSA-2021:2456)"},{"cve":"CVE-2020-35498","qid":"281603","title":"Fedora Security Update for dpdk (FEDORA-2021-fba11d37ee)"},{"cve":"CVE-2020-35498","qid":"375504","title":"Citrix XenServer Security Updates(CTX306565)"},{"cve":"CVE-2020-35498","qid":"501656","title":"Alpine Linux Security Update for openvswitch"},{"cve":"CVE-2020-35498","qid":"710800","title":"Gentoo Linux Open vSwitch Multiple Vulnerabilities (GLSA 202311-16)"},{"cve":"CVE-2020-35498","qid":"750361","title":"OpenSUSE Security Update for openvswitch (openSUSE-SU-2021:0283-1)"},{"cve":"CVE-2020-35498","qid":"752618","title":"SUSE Enterprise Linux Security Update for openvswitch (SUSE-SU-2022:3384-1)"},{"cve":"CVE-2020-35498","qid":"900146","title":"CBL-Mariner Linux Security Update for openvswitch 2.12.0"},{"cve":"CVE-2020-35498","qid":"902813","title":"Common Base Linux Mariner (CBL-Mariner) Security Update for openvswitch (3883)"}]},"source_records":{"cve_program":{"data_type":"CVE","data_format":"MITRE","data_version":"4.0","CVE_data_meta":{"ID":"CVE-2020-35498","ASSIGNER":"secalert@redhat.com","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"vendor_name":"n/a","product":{"product_data":[{"product_name":"openvswitch","version":{"version_data":[{"version_value":"openvswitch 2.5.12, openvswitch 2.6.10, openvswitch 2.7.13, openvswitch 2.8.11, openvswitch 2.9.9, openvswitch 2.10.7, openvswitch 2.11.6, openvswitch 2.12.3, openvswitch 2.13.3, openvswitch 2.14.2"}]}}]}}]}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-400"}]}]},"references":{"reference_data":[{"refsource":"MISC","name":"https://bugzilla.redhat.com/show_bug.cgi?id=1908845","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1908845"},{"refsource":"MISC","name":"https://www.openwall.com/lists/oss-security/2021/02/10/4","url":"https://www.openwall.com/lists/oss-security/2021/02/10/4"},{"refsource":"DEBIAN","name":"DSA-4852","url":"https://www.debian.org/security/2021/dsa-4852"},{"refsource":"MLIST","name":"[debian-lts-announce] 20210219 [SECURITY] [DLA 2571-1] openvswitch security update","url":"https://lists.debian.org/debian-lts-announce/2021/02/msg00032.html"},{"refsource":"FEDORA","name":"FEDORA-2021-fba11d37ee","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UJ4DXFJWMZ325ECZXPZOSK7BOEDJZHPR/"}]},"description":{"description_data":[{"lang":"eng","value":"A vulnerability was found in openvswitch. A limitation in the implementation of userspace packet parsing can allow a malicious user to send a specially crafted packet causing the resulting megaflow in the kernel to be too wide, potentially causing a denial of service. The highest threat from this vulnerability is to system availability."}]}},"nvd":{"publishedDate":"2021-02-11 18:15:00","lastModifiedDate":"2023-11-26 11:15:00","problem_types":["CWE-400"],"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},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:N/I:N/A:C","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"COMPLETE","baseScore":7.8},"severity":"HIGH","exploitabilityScore":10,"impactScore":6.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*","versionStartIncluding":"2.14.0","versionEndExcluding":"2.14.2","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*","versionStartIncluding":"2.13.0","versionEndExcluding":"2.13.3","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*","versionStartIncluding":"2.12.0","versionEndExcluding":"2.12.3","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*","versionStartIncluding":"2.11.0","versionEndExcluding":"2.11.6","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*","versionStartIncluding":"2.10.0","versionEndExcluding":"2.10.7","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*","versionStartIncluding":"2.9.0","versionEndExcluding":"2.9.9","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*","versionStartIncluding":"2.8.0","versionEndExcluding":"2.8.11","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*","versionStartIncluding":"2.7.0","versionEndExcluding":"2.7.13","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.0","versionEndExcluding":"2.6.10","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*","versionStartIncluding":"2.5.0","versionEndExcluding":"2.5.12","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2020","CveId":"35498","Ordinal":"194173","Title":"CVE-2020-35498","CVE":"CVE-2020-35498","Year":"2020"},"notes":[{"CveYear":"2020","CveId":"35498","Ordinal":"1","NoteData":"A vulnerability was found in openvswitch. A limitation in the implementation of userspace packet parsing can allow a malicious user to send a specially crafted packet causing the resulting megaflow in the kernel to be too wide, potentially causing a denial of service. The highest threat from this vulnerability is to system availability.","Type":"Description","Title":null},{"CveYear":"2020","CveId":"35498","Ordinal":"2","NoteData":"2021-02-11","Type":"Other","Title":"Published"},{"CveYear":"2020","CveId":"35498","Ordinal":"3","NoteData":"2021-03-04","Type":"Other","Title":"Modified"}]}}}