CVE-2021-0262

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Exploitation of this vulnerability may allow a logically adjacent attacker to trigger a Denial of Service (DoS). Continued exploitation of this vulnerability will sustain the Denial of Service (DoS) condition. This issue only affects QFX10002-60C devices. No other product or platform is vulnerable to this issue. This issue affects Juniper Networks Junos OS on QFX10002-60C: 19.1 version 19.1R3-S1 and later versions; 19.1 versions prior to 19.1R3-S3; 19.2 version 19.2R2 and later versions; 19.2 versions prior to 19.2R3-S1; 20.2 versions prior to 20.2R1-S2. This issue does not affect Juniper Networks Junos OS: versions prior to 19.1R3; 19.2 versions prior to 19.2R2; any version of 19.3; version 20.2R2 and later releases."}], "exploits": [{"lang": "en", "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "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:H", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-416", "description": "CWE-416 Use After Free", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-04-22T19:37:20.000Z", "orgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968", "shortName": "juniper"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://kb.juniper.net/JSA11153"}], "solutions": [{"lang": "en", "value": "The following software releases have been updated to resolve this specific issue: Junos OS 19.1R3-S3, 19.2R3-S1, 20.2R1-S2, and all subsequent releases."}], "source": {"advisory": "JSA11153", "defect": ["1519453"], "discovery": "INTERNAL"}, "title": "Junos OS: QFX10002-60C: Use after free vulnerability found during static code analysis", "workarounds": [{"lang": "en", "value": "There are no viable workarounds for this issue."}], "x_generator": {"engine": "Vulnogram 0.0.9"}, "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "sirt@juniper.net", "DATE_PUBLIC": "2021-04-14T16:00:00.000Z", "ID": "CVE-2021-0262", "STATE": "PUBLIC", "TITLE": "Junos OS: QFX10002-60C: Use after free vulnerability found during static code analysis"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Junos OS", "version": {"version_data": [{"platform": "QFX10002-60C", "version_affected": "!<", "version_value": "19.1R3"}, {"platform": "QFX10002-60C", "version_affected": ">=", "version_name": "19.1", "version_value": "19.1R3-S1"}, {"platform": "QFX10002-60C", "version_affected": "<", "version_name": "19.1", "version_value": "19.1R3-S3"}, {"platform": "QFX10002-60C", "version_affected": "!<", "version_name": "19.2", "version_value": "19.2R2"}, {"platform": "QFX10002-60C", "version_affected": ">=", "version_name": "19.2", "version_value": "19.2R2"}, {"platform": "QFX10002-60C", "version_affected": "<", "version_name": "19.2", "version_value": "19.2R3-S1"}, {"platform": "QFX10002-60C", "version_affected": "!", "version_value": "19.3"}, {"platform": "QFX10002-60C", "version_affected": "<", "version_name": "20.2", "version_value": "20.2R1-S2"}, {"platform": "QFX10002-60C", "version_affected": "!>=", "version_value": "20.2R2"}]}}]}, "vendor_name": "Juniper Networks"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Through routine static code analysis of the Juniper Networks Junos OS software codebase, the Secure Development Life Cycle team identified a Use After Free vulnerability in PFE packet processing on the QFX10002-60C switching platform. Exploitation of this vulnerability may allow a logically adjacent attacker to trigger a Denial of Service (DoS). Continued exploitation of this vulnerability will sustain the Denial of Service (DoS) condition. This issue only affects QFX10002-60C devices. No other product or platform is vulnerable to this issue. This issue affects Juniper Networks Junos OS on QFX10002-60C: 19.1 version 19.1R3-S1 and later versions; 19.1 versions prior to 19.1R3-S3; 19.2 version 19.2R2 and later versions; 19.2 versions prior to 19.2R3-S1; 20.2 versions prior to 20.2R1-S2. This issue does not affect Juniper Networks Junos OS: versions prior to 19.1R3; 19.2 versions prior to 19.2R2; any version of 19.3; version 20.2R2 and later releases."}]}, "exploit": [{"lang": "en", "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."}], "generator": {"engine": "Vulnogram 0.0.9"}, "impact": {"cvss": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "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:H", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-416 Use After Free"}]}]}, "references": {"reference_data": [{"name": "https://kb.juniper.net/JSA11153", "refsource": "MISC", "url": "https://kb.juniper.net/JSA11153"}]}, "solution": [{"lang": "en", "value": "The following software releases have been updated to resolve this specific issue: Junos OS 19.1R3-S3, 19.2R3-S1, 20.2R1-S2, and all subsequent releases."}], "source": {"advisory": "JSA11153", "defect": ["1519453"], "discovery": "INTERNAL"}, "work_around": [{"lang": "en", "value": "There are no viable workarounds for this issue."}]}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T15:32:10.500Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://kb.juniper.net/JSA11153"}]}]}, "cveMetadata": {"assignerOrgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968", "assignerShortName": "juniper", "cveId": "CVE-2021-0262", "datePublished": "2021-04-22T19:37:20.806Z", "dateReserved": "2020-10-27T00:00:00.000Z", "dateUpdated": "2024-09-17T00:51:26.312Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"platforms": ["QFX10002-60C"], "product": "Junos OS", "vendor": "Juniper Networks", "versions": [{"lessThan": "19.1R3", "status": "unaffected", "version": "unspecified", "versionType": "custom"}, {"status": "unaffected", "version": "19.3"}, {"lessThan": "unspecified", "status": "unaffected", "version": "20.2R2", "versionType": "custom"}, {"changes": [{"at": "19.1R3-S3", "status": "unaffected"}], "lessThan": "19.1*", "status": "affected", "version": "19.1R3-S1", "versionType": "custom"}, {"changes": [{"at": "19.2R2", "status": "affected"}, {"at": "19.2R3-S1", "status": "unaffected"}], "lessThan": "19.2R2", "status": "unaffected", "version": "19.2", "versionType": "custom"}, {"lessThan": "20.2R1-S2", "status": "affected", "version": "20.2", "versionType": "custom"}]}], "source": "sirt@juniper.net"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:juniper:junos:19.1:r3-s1:*:*:*:*:*:*", "matchCriteriaId": "E45E5421-2F6F-4AF9-8EB1-431A804FC649", "vulnerable": true}, {"criteria": "cpe:2.3:o:juniper:junos:19.1:r3-s2:*:*:*:*:*:*", "matchCriteriaId": "93098975-4A06-4A72-8DF0-F2C5E1AF2F77", "vulnerable": true}, {"criteria": "cpe:2.3:o:juniper:junos:19.2:r2:*:*:*:*:*:*", "matchCriteriaId": "7C71D2FA-B1A4-4004-807F-7B3BB347DF4C", "vulnerable": true}, {"criteria": "cpe:2.3:o:juniper:junos:19.2:r2-s1:*:*:*:*:*:*", "matchCriteriaId": "9E78E854-DDD3-4D1A-97AB-AEA70B9B811F", "vulnerable": true}, {"criteria": "cpe:2.3:o:juniper:junos:19.2:r3:*:*:*:*:*:*", "matchCriteriaId": "512FB3D1-BA5B-4F73-BDB2-49D6889F5473", "vulnerable": true}, {"criteria": "cpe:2.3:o:juniper:junos:20.2:r1:*:*:*:*:*:*", "matchCriteriaId": "CD07B7E2-F5C2-4610-9133-FDA9E66DFF4F", "vulnerable": true}, {"criteria": "cpe:2.3:o:juniper:junos:20.2:r1-s1:*:*:*:*:*:*", "matchCriteriaId": "D3C23AEB-34DE-44FB-8D64-E69D6E8B7401", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Through routine static code analysis of the Juniper Networks Junos OS software codebase, the Secure Development Life Cycle team identified a Use After Free vulnerability in PFE packet processing on the QFX10002-60C switching platform. Exploitation of this vulnerability may allow a logically adjacent attacker to trigger a Denial of Service (DoS). Continued exploitation of this vulnerability will sustain the Denial of Service (DoS) condition. This issue only affects QFX10002-60C devices. No other product or platform is vulnerable to this issue. This issue affects Juniper Networks Junos OS on QFX10002-60C: 19.1 version 19.1R3-S1 and later versions; 19.1 versions prior to 19.1R3-S3; 19.2 version 19.2R2 and later versions; 19.2 versions prior to 19.2R3-S1; 20.2 versions prior to 20.2R1-S2. This issue does not affect Juniper Networks Junos OS: versions prior to 19.1R3; 19.2 versions prior to 19.2R2; any version of 19.3; version 20.2R2 and later releases."}, {"lang": "es", "value": "A trav\u00e9s del an\u00e1lisis de c\u00f3digo est\u00e1tico de rutina de la base de c\u00f3digo del software de Juniper Networks Junos OS, el equipo Secure Development Life Cycle identific\u00f3 una vulnerabilidad Uso de la Memoria Previamente Liberada en el procesamiento de paquetes PFE en la plataforma de switching QFX10002-60C.&#xa0;La explotaci\u00f3n de esta vulnerabilidad puede permitir a un atacante l\u00f3gicamente adyacente activar una Denegaci\u00f3n de Servicio (DoS).&#xa0;Una explotaci\u00f3n continua de esta vulnerabilidad mantendr\u00e1 la condici\u00f3n de Denegaci\u00f3n de Servicio (DoS).&#xa0;Este problema solo afecta a los dispositivos QFX10002-60C.&#xa0;Ning\u00fan otro producto o plataforma es vulnerable a este problema.&#xa0;Este problema afecta a Juniper Networks Junos OS en QFX10002-60C: versiones 19.1 19.1R3-S1 y versiones posteriores;&#xa0;versiones 19.1 anteriores a 19.1R3-S3;&#xa0;versiones 19.2, 19.2R2 y versiones posteriores;&#xa0;versiones 19.2 anteriores a 19.2R3-S1;&#xa0;versiones 20.2 anteriores a 20.2R1-S2.&#xa0;Este problema no afecta al sistema operativo Junos de Juniper Networks:&#xa0;versiones anteriores a 19.1R3;&#xa0;versiones 19.2 anteriores a 19.2R2;&#xa0;cualquier versi\u00f3n de 19.3;&#xa0;versi\u00f3n 20.2R2 y versiones posteriores"}], "id": "CVE-2021-0262", "lastModified": "2026-06-17T03:29:38.783", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "LOW", "accessVector": "ADJACENT_NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 3.3, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:A/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 6.5, "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": "HIGH", "baseScore": 6.5, "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:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "sirt@juniper.net", "type": "Secondary"}]}, "published": "2021-04-22T20:15:09.737", "references": [{"source": "sirt@juniper.net", "tags": ["Vendor Advisory"], "url": "https://kb.juniper.net/JSA11153"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://kb.juniper.net/JSA11153"}], "sourceIdentifier": "sirt@juniper.net", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "sirt@juniper.net", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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