{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-02T13:41:46.665","vulnerabilities":[{"cve":{"id":"CVE-2024-20508","sourceIdentifier":"psirt@cisco.com","published":"2024-09-25T17:15:18.267","lastModified":"2024-10-03T14:43:23.810","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"A vulnerability in Cisco Unified Threat Defense (UTD) Snort Intrusion Prevention System (IPS) Engine for Cisco IOS XE Software could allow an unauthenticated, remote attacker to bypass configured security policies or cause a denial of service (DoS) condition on an affected device.\r\n\r\nThis vulnerability is due to insufficient validation of HTTP requests when they are processed by Cisco UTD Snort IPS Engine. An attacker could exploit this vulnerability by sending a crafted HTTP request through an affected device. A successful exploit could allow the attacker to trigger a reload of the Snort process.  If the action in case of Cisco UTD Snort IPS Engine failure is set to the default, fail-open, successful exploitation of this vulnerability could allow the attacker to bypass configured security policies. If the action in case of Cisco UTD Snort IPS Engine failure is set to fail-close, successful exploitation of this vulnerability could cause traffic that is configured to be inspected by Cisco UTD Snort IPS Engine to be dropped."},{"lang":"es","value":"Una vulnerabilidad en Cisco Unified Threat Defense (UTD) Snort Intrusion Prevention System (IPS) Engine para Cisco IOS XE Software podría permitir que un atacante remoto no autenticado omita las políticas de seguridad configuradas o provoque una condición de denegación de servicio (DoS) en un dispositivo afectado. Esta vulnerabilidad se debe a una validación insuficiente de las solicitudes HTTP cuando son procesadas por Cisco UTD Snort IPS Engine. Un atacante podría explotar esta vulnerabilidad enviando una solicitud HTTP manipulada a través de un dispositivo afectado. Una explotación exitosa podría permitir al atacante activar una recarga del proceso Snort. Si la acción en caso de falla de Cisco UTD Snort IPS Engine está configurada en la predeterminada, fail-open, la explotación exitosa de esta vulnerabilidad podría permitir al atacante omitir las políticas de seguridad configuradas. Si la acción en caso de falla de Cisco UTD Snort IPS Engine está configurada en fail-close, la explotación exitosa de esta vulnerabilidad podría hacer que se descarte el tráfico que está configurado para ser inspeccionado por Cisco UTD Snort IPS Engine."}],"metrics":{"cvssMetricV31":[{"source":"psirt@cisco.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N","baseScore":5.8,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":3.9,"impactScore":1.4},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"LOW"},"exploitabilityScore":3.9,"impactScore":2.5}]},"weaknesses":[{"source":"psirt@cisco.com","type":"Secondary","description":[{"lang":"en","value":"CWE-122"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-787"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.6.1a:*:*:*:*:*:*:*","matchCriteriaId":"245ED9C3-4B16-4CC1-BC78-B4AED938C0B6"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.6.2:*:*:*:*:*:*:*","matchCriteriaId":"CC21847D-908F-45C0-9A97-E77DE1C4A8D8"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.6.6:*:*:*:*:*:*:*","matchCriteriaId":"CBCF8B3B-1F42-43CF-A328-9381BA459262"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.7.1a:*:*:*:*:*:*:*","matchCriteriaId":"D39700C2-E83C-4ECE-9640-CEFBDD18DC4C"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.7.2:*:*:*:*:*:*:*","matchCriteriaId":"EA09D285-3016-4042-9078-F94254C330B6"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.8.1a:*:*:*:*:*:*:*","matchCriteriaId":"0286B57C-2E00-48F9-B3B4-E2EF3E874218"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.5a:*:*:*:*:*:*:*","matchCriteriaId":"D247882B-DDA4-47A6-A2B0-2AFFCB94F133"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.11.1a:*:*:*:*:*:*:*","matchCriteriaId":"3F45D0BD-724A-4D44-9192-D52FAF2E51FD"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.1a:*:*:*:*:*:*:*","matchCriteriaId":"8FC4D3D8-4391-4ED6-B27B-EF47C96904CD"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.2:*:*:*:*:*:*:*","matchCriteriaId":"60AE1B18-3CEB-45B3-A43D-3C6DCC1F20F3"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.3:*:*:*:*:*:*:*","matchCriteriaId":"9F4AA555-A8AD-4EF1-BDED-CCB550AA7560"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.3a:*:*:*:*:*:*:*","matchCriteriaId":"158ADFDB-D308-40AA-A445-BB9AF2F2414B"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.4:*:*:*:*:*:*:*","matchCriteriaId":"5F44916C-A0B3-40B1-B9E5-ACED3A0ECC80"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.13.1a:*:*:*:*:*:*:*","matchCriteriaId":"AA3E7D96-E406-4CB5-91FC-A0FD5D94A876"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.14.1a:*:*:*:*:*:*:*","matchCriteriaId":"07AAFFE0-B85D-4A62-894B-20A05973CC5D"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.15.1a:*:*:*:*:*:*:*","matchCriteriaId":"7842C05A-F9DE-49A7-8478-A1EF324C593D"}]}]}],"references":[{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-utd-snort3-dos-bypas-b4OUEwxD","source":"psirt@cisco.com","tags":["Vendor Advisory"]}]}}]}