{"api_version":"1","generated_at":"2026-07-23T21:14:57+00:00","cve":"CVE-2021-3700","urls":{"html":"https://cve.report/CVE-2021-3700","api":"https://cve.report/api/cve/CVE-2021-3700.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-3700","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-3700"},"summary":{"title":"CVE-2021-3700","description":"A use-after-free vulnerability was found in usbredir in versions prior to 0.11.0 in the usbredirparser_serialize() in usbredirparser/usbredirparser.c. This issue occurs when serializing large amounts of buffered write data in the case of a slow or blocked destination.","state":"PUBLIC","assigner":"secalert@redhat.com","published_at":"2022-02-24 19:15:00","updated_at":"2022-04-25 20:47:00"},"problem_types":["CWE-416"],"metrics":[],"references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1992830","name":"https://bugzilla.redhat.com/show_bug.cgi?id=1992830","refsource":"MISC","tags":[],"title":"1992830 – (CVE-2021-3700) CVE-2021-3700 usbredir: use-after-free in usbredirparser_serialize() in usbredirparser/usbredirparser.c","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://lists.debian.org/debian-lts-announce/2022/03/msg00030.html","name":"[debian-lts-announce] 20220320 [SECURITY] [DLA 2958-1] usbredir security update","refsource":"MLIST","tags":[],"title":"[SECURITY] [DLA 2958-1] usbredir security update","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://gitlab.freedesktop.org/spice/usbredir/-/commit/03c519ff5831ba","name":"https://gitlab.freedesktop.org/spice/usbredir/-/commit/03c519ff5831ba","refsource":"MISC","tags":[],"title":"Avoid use-after-free in serialization (03c519ff) · Commits · spice / usbredir · GitLab","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-3700","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3700","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2021","cve_id":"3700","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":"2021","cve_id":"3700","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"fedoraproject","cpe5":"fedora","cpe6":"34","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"3700","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"redhat","cpe5":"enterprise_linux","cpe6":"6.0","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"3700","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"redhat","cpe5":"enterprise_linux","cpe6":"7.0","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"3700","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"redhat","cpe5":"enterprise_linux","cpe6":"8.0","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"3700","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"spice-space","cpe5":"usbredir","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2021-3700","qid":"179139","title":"Debian Security Update for usbredir (DLA 2958-1)"},{"cve":"CVE-2021-3700","qid":"182880","title":"Debian Security Update for usbredir (CVE-2021-3700)"},{"cve":"CVE-2021-3700","qid":"199081","title":"Ubuntu Security Notification for usbredir Vulnerability (USN-5784-1)"},{"cve":"CVE-2021-3700","qid":"502393","title":"Alpine Linux Security Update for usbredir"},{"cve":"CVE-2021-3700","qid":"670826","title":"EulerOS Security Update for usbredir (EulerOS-SA-2021-2702)"},{"cve":"CVE-2021-3700","qid":"670838","title":"EulerOS Security Update for usbredir (EulerOS-SA-2021-2727)"},{"cve":"CVE-2021-3700","qid":"670888","title":"EulerOS Security Update for usbredir (EulerOS-SA-2021-2702)"},{"cve":"CVE-2021-3700","qid":"670955","title":"EulerOS Security Update for usbredir (EulerOS-SA-2021-2621)"},{"cve":"CVE-2021-3700","qid":"670987","title":"EulerOS Security Update for usbredir (EulerOS-SA-2021-2648)"},{"cve":"CVE-2021-3700","qid":"671040","title":"EulerOS Security Update for usbredir (EulerOS-SA-2021-2677)"},{"cve":"CVE-2021-3700","qid":"901233","title":"Common Base Linux Mariner (CBL-Mariner) Security Update for usbredir (8824)"},{"cve":"CVE-2021-3700","qid":"902297","title":"Common Base Linux Mariner (CBL-Mariner) Security Update for usbredir (8824-1)"}]},"source_records":{"cve_program":{"data_type":"CVE","data_format":"MITRE","data_version":"4.0","CVE_data_meta":{"ID":"CVE-2021-3700","ASSIGNER":"secalert@redhat.com","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"vendor_name":"n/a","product":{"product_data":[{"product_name":"usbredir","version":{"version_data":[{"version_value":"usbredir 0.11.0"}]}}]}}]}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-416"}]}]},"references":{"reference_data":[{"refsource":"MISC","name":"https://bugzilla.redhat.com/show_bug.cgi?id=1992830","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1992830"},{"refsource":"MISC","name":"https://gitlab.freedesktop.org/spice/usbredir/-/commit/03c519ff5831ba","url":"https://gitlab.freedesktop.org/spice/usbredir/-/commit/03c519ff5831ba"},{"refsource":"MLIST","name":"[debian-lts-announce] 20220320 [SECURITY] [DLA 2958-1] usbredir security update","url":"https://lists.debian.org/debian-lts-announce/2022/03/msg00030.html"}]},"description":{"description_data":[{"lang":"eng","value":"A use-after-free vulnerability was found in usbredir in versions prior to 0.11.0 in the usbredirparser_serialize() in usbredirparser/usbredirparser.c. This issue occurs when serializing large amounts of buffered write data in the case of a slow or blocked destination."}]}},"nvd":{"publishedDate":"2022-02-24 19:15:00","lastModifiedDate":"2022-04-25 20:47:00","problem_types":["CWE-416"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":6.4,"baseSeverity":"MEDIUM"},"exploitabilityScore":0.5,"impactScore":5.9},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:L/AC:M/Au:N/C:P/I:P/A:P","accessVector":"LOCAL","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL","baseScore":4.4},"severity":"MEDIUM","exploitabilityScore":3.4,"impactScore":6.4,"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:spice-space:usbredir:*:*:*:*:*:*:*:*","versionEndExcluding":"0.11.0","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"3700","Ordinal":"214227","Title":"CVE-2021-3700","CVE":"CVE-2021-3700","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"3700","Ordinal":"1","NoteData":"** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided.","Type":"Description","Title":null}]}}}