{ "containers": { "cna": { "affected": [ { "product": "Cisco NX-OS Software", "vendor": "Cisco", "versions": [ { "status": "affected", "version": "n/a" } ] } ], "datePublic": "2020-08-26T00:00:00", "descriptions": [ { "lang": "en", "value": "A vulnerability in the Border Gateway Protocol (BGP) Multicast VPN (MVPN) implementation of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause an affected device to unexpectedly reload, resulting in a denial of service (DoS) condition. The vulnerability is due to incomplete input validation of a specific type of BGP MVPN update message. An attacker could exploit this vulnerability by sending this specific, valid BGP MVPN update message to a targeted device. A successful exploit could allow the attacker to cause one of the BGP-related routing applications to restart multiple times, leading to a system-level restart. Note: The Cisco implementation of BGP accepts incoming BGP traffic from only explicitly configured peers. To exploit this vulnerability, an attacker must send a specific BGP MVPN update message over an established TCP connection that appears to come from a trusted BGP peer. To do so, the attacker must obtain information about the BGP peers in the trusted network of the affected system." } ], "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_0": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.6, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H", "version": "3.0" } } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-20", "description": "CWE-20", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "dateUpdated": "2020-08-27T15:40:34", "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "shortName": "cisco" }, "references": [ { "name": "20200826 Cisco NX-OS Software Border Gateway Protocol Multicast VPN Denial of Service Vulnerability", "tags": [ "vendor-advisory", "x_refsource_CISCO" ], "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxosbgp-nlri-dos-458rG2OQ" } ], "source": { "advisory": "cisco-sa-nxosbgp-nlri-dos-458rG2OQ", "defect": [ [ "CSCvr58652" ] ], "discovery": "INTERNAL" }, "title": "Cisco NX-OS Software Border Gateway Protocol Multicast VPN Denial of Service Vulnerability", "x_legacyV4Record": { "CVE_data_meta": { "ASSIGNER": "psirt@cisco.com", "DATE_PUBLIC": "2020-08-26T16:00:00", "ID": "CVE-2020-3397", "STATE": "PUBLIC", "TITLE": "Cisco NX-OS Software Border Gateway Protocol Multicast VPN Denial of Service Vulnerability" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "Cisco NX-OS 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 Border Gateway Protocol (BGP) Multicast VPN (MVPN) implementation of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause an affected device to unexpectedly reload, resulting in a denial of service (DoS) condition. The vulnerability is due to incomplete input validation of a specific type of BGP MVPN update message. An attacker could exploit this vulnerability by sending this specific, valid BGP MVPN update message to a targeted device. A successful exploit could allow the attacker to cause one of the BGP-related routing applications to restart multiple times, leading to a system-level restart. Note: The Cisco implementation of BGP accepts incoming BGP traffic from only explicitly configured peers. To exploit this vulnerability, an attacker must send a specific BGP MVPN update message over an established TCP connection that appears to come from a trusted BGP peer. To do so, the attacker must obtain information about the BGP peers in the trusted network of the affected system." } ] }, "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": "8.6", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H", "version": "3.0" } }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "CWE-20" } ] } ] }, "references": { "reference_data": [ { "name": "20200826 Cisco NX-OS Software Border Gateway Protocol Multicast VPN Denial of Service Vulnerability", "refsource": "CISCO", "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxosbgp-nlri-dos-458rG2OQ" } ] }, "source": { "advisory": "cisco-sa-nxosbgp-nlri-dos-458rG2OQ", "defect": [ [ "CSCvr58652" ] ], "discovery": "INTERNAL" } } }, "adp": [ { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T07:30:58.213Z" }, "title": "CVE Program Container", "references": [ { "name": "20200826 Cisco NX-OS Software Border Gateway Protocol Multicast VPN Denial of Service Vulnerability", "tags": [ "vendor-advisory", "x_refsource_CISCO", "x_transferred" ], "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxosbgp-nlri-dos-458rG2OQ" } ] } ] }, "cveMetadata": { "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "assignerShortName": "cisco", "cveId": "CVE-2020-3397", "datePublished": "2020-08-27T15:40:34.148007Z", "dateReserved": "2019-12-12T00:00:00", "dateUpdated": "2024-09-17T00:46:16.815Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1" }