CVE-2021-3031

{"containers": {"cna": {"affected": [{"platforms": ["PA-200, PA-220, PA-500, PA-800, PA-2000 Series, PA-3000 Series, PA-3200 Series, PA-5200"], "product": "PAN-OS", "vendor": "Palo Alto Networks", "versions": [{"lessThan": "8.1.18", "status": "affected", "version": "8.1", "versionType": "custom"}, {"lessThan": "9.0.12", "status": "affected", "version": "9.0", "versionType": "custom"}, {"lessThan": "9.1.5", "status": "affected", "version": "9.1", "versionType": "custom"}]}, {"product": "PAN-OS", "vendor": "Palo Alto Networks", "versions": [{"status": "unaffected", "version": "10.0.*"}, {"lessThan": "8.1*", "status": "unaffected", "version": "8.1.18", "versionType": "custom"}, {"lessThan": "9.0*", "status": "unaffected", "version": "9.0.12", "versionType": "custom"}, {"lessThan": "9.1*", "status": "unaffected", "version": "9.1.5", "versionType": "custom"}]}], "credits": [{"lang": "en", "value": "This issue was found by a customer of Palo Alto Networks during a security review."}], "datePublic": "2021-01-13T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "Padding bytes in Ethernet packets on PA-200, PA-220, PA-500, PA-800, PA-2000 Series, PA-3000 Series, PA-3200 Series, PA-5200 Series, and PA-7000 Series firewalls are not cleared before the data frame is created. This leaks a small amount of random information from the firewall memory into the Ethernet packets. An attacker on the same Ethernet subnet as the PAN-OS firewall is able to collect potentially sensitive information from these packets. This issue is also known as Etherleak and is detected by security scanners as CVE-2003-0001. This issue impacts: PAN-OS 8.1 version earlier than PAN-OS 8.1.18; PAN-OS 9.0 versions earlier than PAN-OS 9.0.12; PAN-OS 9.1 versions earlier than PAN-OS 9.1.5."}], "exploits": [{"lang": "en", "value": "Palo Alto Networks is not aware of any malicious exploitation of this issue."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "NONE", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-200", "description": "CWE-200 Information Exposure", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-01-13T18:10:13.000Z", "orgId": "d6c1279f-00f6-4ef7-9217-f89ffe703ec0", "shortName": "palo_alto"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://security.paloaltonetworks.com/CVE-2021-3031"}], "solutions": [{"lang": "en", "value": "This issue is fixed in PAN-OS 8.1.18, PAN-OS 9.0.12, PAN-OS 9.1.5, and all later PAN-OS versions."}], "source": {"defect": ["PAN-124681"], "discovery": "USER"}, "timeline": [{"lang": "en", "time": "2021-01-13T00:00:00.000Z", "value": "Initial publication"}], "title": "PAN-OS: Information exposure in Ethernet data frame construction (Etherleak)", "workarounds": [{"lang": "en", "value": "There is no workaround to prevent the information leak in the Ethernet packets; however, restricting access to the networks mitigates the risk of this issue."}], "x_generator": {"engine": "Vulnogram 0.0.9"}, "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "psirt@paloaltonetworks.com", "DATE_PUBLIC": "2021-01-13T17:00:00.000Z", "ID": "CVE-2021-3031", "STATE": "PUBLIC", "TITLE": "PAN-OS: Information exposure in Ethernet data frame construction (Etherleak)"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "PAN-OS", "version": {"version_data": [{"platform": "PA-200, PA-220, PA-500, PA-800, PA-2000 Series, PA-3000 Series, PA-3200 Series, PA-5200", "version_affected": "<", "version_name": "8.1", "version_value": "8.1.18"}, {"platform": "PA-200, PA-220, PA-500, PA-800, PA-2000 Series, PA-3000 Series, PA-3200 Series, PA-5200", "version_affected": "<", "version_name": "9.0", "version_value": "9.0.12"}, {"platform": "PA-200, PA-220, PA-500, PA-800, PA-2000 Series, PA-3000 Series, PA-3200 Series, PA-5200", "version_affected": "<", "version_name": "9.1", "version_value": "9.1.5"}, {"version_affected": "!>=", "version_name": "8.1", "version_value": "8.1.18"}, {"version_affected": "!>=", "version_name": "9.0", "version_value": "9.0.12"}, {"version_affected": "!>=", "version_name": "9.1", "version_value": "9.1.5"}, {"version_affected": "!", "version_name": "10.0", "version_value": "10.0.*"}]}}]}, "vendor_name": "Palo Alto Networks"}]}}, "credit": [{"lang": "eng", "value": "This issue was found by a customer of Palo Alto Networks during a security review."}], "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Padding bytes in Ethernet packets on PA-200, PA-220, PA-500, PA-800, PA-2000 Series, PA-3000 Series, PA-3200 Series, PA-5200 Series, and PA-7000 Series firewalls are not cleared before the data frame is created. This leaks a small amount of random information from the firewall memory into the Ethernet packets. An attacker on the same Ethernet subnet as the PAN-OS firewall is able to collect potentially sensitive information from these packets. This issue is also known as Etherleak and is detected by security scanners as CVE-2003-0001. This issue impacts: PAN-OS 8.1 version earlier than PAN-OS 8.1.18; PAN-OS 9.0 versions earlier than PAN-OS 9.0.12; PAN-OS 9.1 versions earlier than PAN-OS 9.1.5."}]}, "exploit": [{"lang": "en", "value": "Palo Alto Networks is not aware of any malicious exploitation of this issue."}], "generator": {"engine": "Vulnogram 0.0.9"}, "impact": {"cvss": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "NONE", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-200 Information Exposure"}]}]}, "references": {"reference_data": [{"name": "https://security.paloaltonetworks.com/CVE-2021-3031", "refsource": "MISC", "url": "https://security.paloaltonetworks.com/CVE-2021-3031"}]}, "solution": [{"lang": "en", "value": "This issue is fixed in PAN-OS 8.1.18, PAN-OS 9.0.12, PAN-OS 9.1.5, and all later PAN-OS versions."}], "source": {"defect": ["PAN-124681"], "discovery": "USER"}, "timeline": [{"lang": "en", "time": "2021-01-13T00:00:00.000Z", "value": "Initial publication"}], "work_around": [{"lang": "en", "value": "There is no workaround to prevent the information leak in the Ethernet packets; however, restricting access to the networks mitigates the risk of this issue."}], "x_advisoryEoL": false, "x_affectedList": ["PAN-OS 9.1.4", "PAN-OS 9.1.3-h1", "PAN-OS 9.1.3", "PAN-OS 9.1.2-h1", "PAN-OS 9.1.2", "PAN-OS 9.1.1", "PAN-OS 9.1.0-h3", "PAN-OS 9.1.0-h2", "PAN-OS 9.1.0-h1", "PAN-OS 9.1.0", "PAN-OS 9.1", "PAN-OS 9.0.11", "PAN-OS 9.0.10", "PAN-OS 9.0.9-h1", "PAN-OS 9.0.9", "PAN-OS 9.0.8", "PAN-OS 9.0.7", "PAN-OS 9.0.6", "PAN-OS 9.0.5", "PAN-OS 9.0.4", "PAN-OS 9.0.3-h3", "PAN-OS 9.0.3-h2", "PAN-OS 9.0.3-h1", "PAN-OS 9.0.3", "PAN-OS 9.0.2-h4", "PAN-OS 9.0.2-h3", "PAN-OS 9.0.2-h2", "PAN-OS 9.0.2-h1", "PAN-OS 9.0.2", "PAN-OS 9.0.1", "PAN-OS 9.0.0", "PAN-OS 9.0", "PAN-OS 8.1.17", "PAN-OS 8.1.16", "PAN-OS 8.1.15-h3", "PAN-OS 8.1.15-h2", "PAN-OS 8.1.15-h1", "PAN-OS 8.1.15", "PAN-OS 8.1.14-h2", "PAN-OS 8.1.14-h1", "PAN-OS 8.1.14", "PAN-OS 8.1.13", "PAN-OS 8.1.12", "PAN-OS 8.1.11", "PAN-OS 8.1.10", "PAN-OS 8.1.9-h4", "PAN-OS 8.1.9-h3", "PAN-OS 8.1.9-h2", "PAN-OS 8.1.9-h1", "PAN-OS 8.1.9", "PAN-OS 8.1.8-h5", "PAN-OS 8.1.8-h4", "PAN-OS 8.1.8-h3", "PAN-OS 8.1.8-h2", "PAN-OS 8.1.8-h1", "PAN-OS 8.1.8", "PAN-OS 8.1.7", "PAN-OS 8.1.6-h2", "PAN-OS 8.1.6-h1", "PAN-OS 8.1.6", "PAN-OS 8.1.5", "PAN-OS 8.1.4", "PAN-OS 8.1.3", "PAN-OS 8.1.2", "PAN-OS 8.1.1", "PAN-OS 8.1.0", "PAN-OS 8.1"]}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T16:45:50.688Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://security.paloaltonetworks.com/CVE-2021-3031"}]}]}, "cveMetadata": {"assignerOrgId": "d6c1279f-00f6-4ef7-9217-f89ffe703ec0", "assignerShortName": "palo_alto", "cveId": "CVE-2021-3031", "datePublished": "2021-01-13T18:10:13.174Z", "dateReserved": "2021-01-06T00:00:00.000Z", "dateUpdated": "2024-09-16T16:48:43.134Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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This leaks a small amount of random information from the firewall memory into the Ethernet packets. An attacker on the same Ethernet subnet as the PAN-OS firewall is able to collect potentially sensitive information from these packets. This issue is also known as Etherleak and is detected by security scanners as CVE-2003-0001. This issue impacts: PAN-OS 8.1 version earlier than PAN-OS 8.1.18; PAN-OS 9.0 versions earlier than PAN-OS 9.0.12; PAN-OS 9.1 versions earlier than PAN-OS 9.1.5."}, {"lang": "es", "value": "Los bytes de relleno en los paquetes Ethernet en los firewalls PA-200, PA-220, PA-500, PA-800, PA-2000 Series, PA-3000 Series, PA-3200 Series, PA-5200 Series y PA-7000 Series, no son borrados antes de que se cree la trama de datos.&#xa0;Esto filtra una peque\u00f1a cantidad de informaci\u00f3n aleatoria de la memoria del firewall para los paquetes Ethernet.&#xa0;Un atacante en la misma subred Ethernet que el firewall PAN-OS puede recopilar informaci\u00f3n potencialmente confidencial de estos paquetes.&#xa0;Este problema tambi\u00e9n se conoce como Etherleak y los esc\u00e1neres de seguridad lo detectan como CVE-2003-0001.&#xa0;Este problema afecta: PAN-OS 8.1 versiones anteriores a PAN-OS 8.1.18;&#xa0;PAN-OS 9.0 versiones anteriores a PAN-OS 9.0.12;&#xa0;PAN-OS 9.1 versiones anteriores a PAN-OS 9.1.5."}], "id": "CVE-2021-3031", "lastModified": "2026-06-17T04:04:35.567", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "LOW", "accessVector": "ADJACENT_NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 3.3, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:A/AC:L/Au:N/C:P/I:N/A:N", "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": "NONE", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "psirt@paloaltonetworks.com", "type": "Secondary"}]}, "published": "2021-01-13T18:15:14.603", "references": [{"source": "psirt@paloaltonetworks.com", "tags": ["Vendor Advisory"], "url": "https://security.paloaltonetworks.com/CVE-2021-3031"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://security.paloaltonetworks.com/CVE-2021-3031"}], "sourceIdentifier": "psirt@paloaltonetworks.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-200"}], "source": "psirt@paloaltonetworks.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-212"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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