CVE-2018-15369

{"id": "CVE-2018-15369", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 7.8, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "COMPLETE", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 6.9, "baseSeverity": "HIGH", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV30": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "CHANGED", "version": "3.0", "baseScore": 6.8, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 4.0, "exploitabilityScore": 2.2}]}, "published": "2018-10-05T14:29:05.997", "references": [{"url": "http://www.securityfocus.com/bid/105426", "tags": ["Third Party Advisory", "VDB Entry"], "source": "ykramarz@cisco.com"}, {"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-tacplus", "tags": ["Vendor Advisory"], "source": "ykramarz@cisco.com"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-20"}]}, {"type": "Secondary", "source": "ykramarz@cisco.com", "description": [{"lang": "en", "value": "CWE-20"}]}], "descriptions": [{"lang": "en", "value": "A vulnerability in the TACACS+ client subsystem of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to improper handling of crafted TACACS+ response packets by the affected software. An attacker could exploit this vulnerability by injecting a crafted TACACS+ packet into an existing TACACS+ session between an affected device and a TACACS+ server or by impersonating a known, valid TACACS+ server and sending a crafted TACACS+ packet to an affected device when establishing a connection to the device. To exploit this vulnerability by using either method, the attacker must know the shared TACACS+ secret and the crafted packet must be sent in response to a TACACS+ request from a TACACS+ client. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition."}, {"lang": "es", "value": "Una vulnerabilidad en el subsistema del cliente TACACS+ en Cisco IOS Software y Cisco IOS XE Software podr\u00eda permitir que un atacante remoto sin autenticar haga que el dispositivo afectado se reinicie, provocando una denegaci\u00f3n de servicio (DoS) en consecuencia. Esta vulnerabilidad se debe a la gesti\u00f3n inadecuada de paquetes de respuesta TACACS+ manipulados por parte del software afectado. Un atacante podr\u00eda explotar esta vulnerabilidad inyectando un paquete TACACS+ manipulado en una sesi\u00f3n TACACS+ entre un dispositivo afectado y un servidor TACACS+ o suplantando un servidor TACACS+ v\u00e1lido y conocido y enviando un paquete TACACS+ manipulado a un dispositivo afectado al establecer una conexi\u00f3n al dispositivo. Para explotar esta vulnerabilidad al emplear cualquier m\u00e9todo, el atacante debe conocer el secreto TACACS+ compartido. Adem\u00e1s, el paquete manipulado debe enviarse en respuesta a una petici\u00f3n TACACS+ desde un cliente TACACS+. Si se explota con \u00e9xito, podr\u00eda permitir que el atacante consiga que el dispositivo afectado se reinicie, provocando una denegaci\u00f3n de servicio."}], "lastModified": "2019-10-09T23:35:28.110", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:cisco:ios:15.6\\(1.9\\)t:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "ECA8C578-1BCA-4F81-BBFA-94193ACF7E08"}, {"criteria": "cpe:2.3:o:cisco:ios_xe:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B7D95E8A-8F0B-44E5-B266-09E10BAAEC55"}], "operator": "OR"}]}], "sourceIdentifier": "ykramarz@cisco.com"}