{"containers": {"cna": {"affected": [{"product": "Cisco IOS XE Software ", "vendor": "Cisco", "versions": [{"status": "affected", "version": "n/a"}]}], "datePublic": "2021-09-22T00:00:00", "descriptions": [{"lang": "en", "value": "A vulnerability in the access control list (ACL) programming of Cisco ASR 900 and ASR 920 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability is due to incorrect programming of hardware when an ACL is configured using a method other than the configuration CLI. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass an ACL on the affected device."}], "exploits": [{"lang": "en", "value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory. "}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-284", "description": "CWE-284", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-09-23T02:25:30", "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "shortName": "cisco"}, "references": [{"name": "20210922 Cisco ASR 900 and ASR 920 Series Aggregation Services Routers Access Control List Bypass Vulnerability", "tags": ["vendor-advisory", "x_refsource_CISCO"], "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asr900acl-UeEyCxkv"}], "source": {"advisory": "cisco-sa-asr900acl-UeEyCxkv", "defect": [["CSCvw57495"]], "discovery": "INTERNAL"}, "title": "Cisco ASR 900 and ASR 920 Series Aggregation Services Routers Access Control List Bypass Vulnerability", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "psirt@cisco.com", "DATE_PUBLIC": "2021-09-22T16:00:00", "ID": "CVE-2021-34696", "STATE": "PUBLIC", "TITLE": "Cisco ASR 900 and ASR 920 Series Aggregation Services Routers Access Control List Bypass Vulnerability"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Cisco IOS XE Software ", "version": {"version_data": [{"version_value": "n/a"}]}}]}, "vendor_name": "Cisco"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "A vulnerability in the access control list (ACL) programming of Cisco ASR 900 and ASR 920 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability is due to incorrect programming of hardware when an ACL is configured using a method other than the configuration CLI. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass an ACL on the affected device."}]}, "exploit": [{"lang": "en", "value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory. "}], "impact": {"cvss": {"baseScore": "5.8", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N ", "version": "3.0"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-284"}]}]}, "references": {"reference_data": [{"name": "20210922 Cisco ASR 900 and ASR 920 Series Aggregation Services Routers Access Control List Bypass Vulnerability", "refsource": "CISCO", "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asr900acl-UeEyCxkv"}]}, "source": {"advisory": "cisco-sa-asr900acl-UeEyCxkv", "defect": [["CSCvw57495"]], "discovery": "INTERNAL"}}}}, "cveMetadata": {"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "assignerShortName": "cisco", "cveId": "CVE-2021-34696", "datePublished": "2021-09-22T00:00:00", "dateReserved": "2021-06-15T00:00:00", "dateUpdated": "2021-09-23T02:25:30", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.0"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*", "matchCriteriaId": "63658947-333C-4689-A50C-9EA874B8FB4A", "versionEndIncluding": "17.3.2", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:cisco:asr_902:-:*:*:*:*:*:*:*", "matchCriteriaId": "70352B04-C3FD-47F5-A2F8-691CF63EB50D", "vulnerable": false}, {"criteria": "cpe:2.3:h:cisco:asr_903:-:*:*:*:*:*:*:*", "matchCriteriaId": "51938C0A-AFDB-4B12-BB64-9C67FC0C738F", "vulnerable": false}, {"criteria": "cpe:2.3:h:cisco:asr_907:-:*:*:*:*:*:*:*", "matchCriteriaId": "A18E4A46-10D3-48F8-9E92-377ACA447257", "vulnerable": false}, {"criteria": "cpe:2.3:h:cisco:asr_920-10sz-pd:-:*:*:*:*:*:*:*", "matchCriteriaId": "DBE110B5-CC6E-4103-9983-4195BCC28165", "vulnerable": false}, {"criteria": "cpe:2.3:h:cisco:asr_920-10sz-pd_r:-:*:*:*:*:*:*:*", "matchCriteriaId": "B97DDC45-ABD1-4C8F-A249-0865345637A4", "vulnerable": false}, {"criteria": "cpe:2.3:h:cisco:asr_920-12cz-a:-:*:*:*:*:*:*:*", "matchCriteriaId": "3FE4D129-435B-45DD-838D-4017BD94DF93", "vulnerable": false}, {"criteria": "cpe:2.3:h:cisco:asr_920-12cz-a_r:-:*:*:*:*:*:*:*", "matchCriteriaId": "456C68A8-F3C8-4302-B55A-134979B42045", "vulnerable": false}, {"criteria": "cpe:2.3:h:cisco:asr_920-12cz-d:-:*:*:*:*:*:*:*", "matchCriteriaId": "870D5B63-A1D5-442A-B2B9-9E522E5DB08F", "vulnerable": false}, {"criteria": "cpe:2.3:h:cisco:asr_920-12cz-d_r:-:*:*:*:*:*:*:*", "matchCriteriaId": "17C6733C-F77B-4688-B051-C1557F4D8D41", "vulnerable": false}, {"criteria": "cpe:2.3:h:cisco:asr_920-12sz-im:-:*:*:*:*:*:*:*", "matchCriteriaId": "2BD45D77-4097-4AFB-98DF-5B8188316C20", "vulnerable": false}, {"criteria": "cpe:2.3:h:cisco:asr_920-12sz-im_r:-:*:*:*:*:*:*:*", "matchCriteriaId": "489F97AB-5C6D-4AFE-BE5A-ABF7F9ED8B66", "vulnerable": false}, {"criteria": "cpe:2.3:h:cisco:asr_920-24sz-im:-:*:*:*:*:*:*:*", "matchCriteriaId": "064DB97B-9E52-45BC-9F43-8FCB5570FC7D", "vulnerable": false}, {"criteria": "cpe:2.3:h:cisco:asr_920-24sz-im_r:-:*:*:*:*:*:*:*", "matchCriteriaId": "31608C12-FBED-4EAD-96EC-48BC4B356B77", "vulnerable": false}, {"criteria": "cpe:2.3:h:cisco:asr_920-24sz-m:-:*:*:*:*:*:*:*", "matchCriteriaId": "D989205A-0576-415C-935E-E83AD42FD1CB", "vulnerable": false}, {"criteria": "cpe:2.3:h:cisco:asr_920-24sz-m_r:-:*:*:*:*:*:*:*", "matchCriteriaId": "6D21D9A5-DE8F-4C55-B03F-35C04C270A40", "vulnerable": false}, {"criteria": "cpe:2.3:h:cisco:asr_920-24tz-m:-:*:*:*:*:*:*:*", "matchCriteriaId": "78C3EB40-574A-48F7-A679-90F62ED976B5", "vulnerable": false}, {"criteria": "cpe:2.3:h:cisco:asr_920-24tz-m_r:-:*:*:*:*:*:*:*", "matchCriteriaId": "B6CC6206-DF19-4636-84C2-8912E443D122", "vulnerable": false}, {"criteria": "cpe:2.3:h:cisco:asr_920-4sz-a:-:*:*:*:*:*:*:*", "matchCriteriaId": "85489F69-EAF0-4971-8C93-36838A8AA00E", "vulnerable": false}, {"criteria": "cpe:2.3:h:cisco:asr_920-4sz-a_r:-:*:*:*:*:*:*:*", "matchCriteriaId": "BE95FEC1-12F3-44FC-B922-CD18CADB42FE", "vulnerable": false}, {"criteria": "cpe:2.3:h:cisco:asr_920-4sz-d:-:*:*:*:*:*:*:*", "matchCriteriaId": "2D029B0C-2DAE-491A-90B4-79C093EC9E48", "vulnerable": false}, {"criteria": "cpe:2.3:h:cisco:asr_920-4sz-d_r:-:*:*:*:*:*:*:*", "matchCriteriaId": "BE37BC85-7758-4412-A5E6-0F1A19E8776B", "vulnerable": false}, {"criteria": "cpe:2.3:h:cisco:asr_920u-12sz-im:-:*:*:*:*:*:*:*", "matchCriteriaId": "BA179D79-07E7-4721-85BB-0C740B516B1F", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "descriptions": [{"lang": "en", "value": "A vulnerability in the access control list (ACL) programming of Cisco ASR 900 and ASR 920 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability is due to incorrect programming of hardware when an ACL is configured using a method other than the configuration CLI. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass an ACL on the affected device."}, {"lang": "es", "value": "Una vulnerabilidad en la programaci\u00f3n de la lista de control de acceso (ACL) de Cisco ASR 900 and ASR 920 Series Aggregation Services Routers podr\u00eda permitir a un atacante remoto no autenticado omitir una ACL configurada. Esta vulnerabilidad es debido a la programaci\u00f3n incorrecta del hardware cuando se configura una ACL mediante un m\u00e9todo distinto de la CLI de configuraci\u00f3n. Un atacante podr\u00eda explotar esta vulnerabilidad al intentar enviar tr\u00e1fico mediante un dispositivo afectado. Una explotaci\u00f3n con \u00e9xito podr\u00eda permitir al atacante omitir una ACL en el dispositivo afectado"}], "id": "CVE-2021-34696", "lastModified": "2023-11-07T03:36:04.957", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N", "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": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "ykramarz@cisco.com", "type": "Secondary"}]}, "published": "2021-09-23T03:15:15.633", "references": [{"source": "ykramarz@cisco.com", "tags": ["Vendor Advisory"], "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asr900acl-UeEyCxkv"}], "sourceIdentifier": "ykramarz@cisco.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-Other"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-284"}], "source": "ykramarz@cisco.com", "type": "Secondary"}]}

{}