{"containers": {"cna": {"affected": [{"product": "zephyr", "vendor": "zephyrproject-rtos", "versions": [{"lessThan": "unspecified", "status": "affected", "version": "2.4.0", "versionType": "custom"}, {"lessThan": "unspecified", "status": "affected", "version": "2.5.0", "versionType": "custom"}]}], "datePublic": "2021-06-19T00:00:00", "descriptions": [{"lang": "en", "value": "Disconnecting L2CAP channel right after invalid ATT request leads freeze. Zephyr versions >= 2.4.0, >= 2.5.0 contain Use After Free (CWE-416). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-7g38-3x9v-v7vp"}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "LOW", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-416", "description": "Use After Free (CWE-416)", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-10-19T22:25:09", "orgId": "e2e69745-5e70-4e92-8431-deb5529a81ad", "shortName": "zephyr"}, "references": [{"tags": ["x_refsource_MISC"], "url": "http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-7g38-3x9v-v7vp"}], "source": {"defect": ["https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-7g38-3x9v-v7vp"]}, "title": "Disconnecting L2CAP channel right after invalid ATT request leads freeze", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "vulnerabilities@zephyrproject.org", "DATE_PUBLIC": "2021-06-19T00:00:00.000Z", "ID": "CVE-2021-3455", "STATE": "PUBLIC", "TITLE": "Disconnecting L2CAP channel right after invalid ATT request leads freeze"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "zephyr", "version": {"version_data": [{"version_affected": ">=", "version_value": "2.4.0"}, {"version_affected": ">=", "version_value": "2.5.0"}]}}]}, "vendor_name": "zephyrproject-rtos"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Disconnecting L2CAP channel right after invalid ATT request leads freeze. Zephyr versions >= 2.4.0, >= 2.5.0 contain Use After Free (CWE-416). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-7g38-3x9v-v7vp"}]}, "impact": {"cvss": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "LOW", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "environmentalScore": 4.3, "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "temporalScore": 4.3, "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "Use After Free (CWE-416)"}]}]}, "references": {"reference_data": [{"name": "http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-7g38-3x9v-v7vp", "refsource": "MISC", "url": "http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-7g38-3x9v-v7vp"}]}, "source": {"defect": ["https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-7g38-3x9v-v7vp"]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T16:53:17.699Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-7g38-3x9v-v7vp"}]}]}, "cveMetadata": {"assignerOrgId": "e2e69745-5e70-4e92-8431-deb5529a81ad", "assignerShortName": "zephyr", "cveId": "CVE-2021-3455", "datePublished": "2021-10-19T22:25:09.479971Z", "dateReserved": "2021-03-19T00:00:00", "dateUpdated": "2024-09-16T18:38:53.853Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zephyrproject:zephyr:*:*:*:*:*:*:*:*", "matchCriteriaId": "93322BD9-A3E5-4E59-9243-9F5774F75CF7", "versionEndExcluding": "2.6.0", "versionStartIncluding": "2.4.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "Disconnecting L2CAP channel right after invalid ATT request leads freeze. Zephyr versions >= 2.4.0, >= 2.5.0 contain Use After Free (CWE-416). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-7g38-3x9v-v7vp"}, {"lang": "es", "value": "La desconexi\u00f3n del canal L2CAP justo despu\u00e9s de una petici\u00f3n de ATT no v\u00e1lida conlleva a una congelaci\u00f3n. Zephyr versiones posteriores a 2.4.0 incluy\u00e9ndola, versiones posteriores a 2.5.0 incluy\u00e9ndola, contienen un Uso de Memoria Previamente Liberada (CWE-416). Para m\u00e1s informaci\u00f3n, consulte https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-7g38-3x9v-v7vp"}], "id": "CVE-2021-3455", "lastModified": "2024-11-21T06:21:34.750", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "LOW", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "vulnerabilities@zephyrproject.org", "type": "Secondary"}, {"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": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-10-19T23:15:07.587", "references": [{"source": "vulnerabilities@zephyrproject.org", "tags": ["Exploit", "Third Party Advisory"], "url": "http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-7g38-3x9v-v7vp"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-7g38-3x9v-v7vp"}], "sourceIdentifier": "vulnerabilities@zephyrproject.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "vulnerabilities@zephyrproject.org", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}