{"id":"CVE-2024-20371","state":"PUBLISHED","title":"Cisco Nexus 3550-F Switches Access Control List Programming Vulnerability","description":"A vulnerability in the access control list (ACL) programming of Cisco Nexus 3550-F Switches could allow an unauthenticated, remote attacker to send traffic that should be blocked to the management interface of an affected device. \r\n\r\nThis vulnerability exists because ACL deny rules are not properly enforced at the time of device reboot. An attacker could exploit this vulnerability by attempting to send traffic to the management interface of an affected device. A successful exploit could allow the attacker to send traffic to the management interface of the affected device.","publishedAt":"2024-11-06T16:28:40.803Z","updatedAt":"2024-11-06T17:23:18.189Z","severity":{"score":5.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","source":"cisco"},"assigner":"cisco","products":["Cisco Cisco Nexus 3550 System Software"],"affected":[{"vendor":"Cisco","product":"Cisco Nexus 3550 System Software","defaultStatus":"unknown","versions":[{"version":"3550-F_1.11.3","status":"affected"},{"version":"3550-F_1.12.0","status":"affected"},{"version":"3550-F_1.16.0","status":"affected"},{"version":"3550-F_1.17.1","status":"affected"},{"version":"3550-F_1.11.1","status":"affected"},{"version":"3550-F_1.11.2","status":"affected"},{"version":"3550-F_1.15.0","status":"affected"},{"version":"3550-F_1.13.0","status":"affected"},{"version":"3550-F_1.14.0","status":"affected"}]}],"references":["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-3550-acl-bypass-mhskZc2q"],"weaknesses":["CWE-264"],"ingestedAt":"2026-10-29T20:06:59.846Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/20xxx/CVE-2024-20371.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2024-20371","state":"PUBLISHED","datePublished":"2024-11-06T16:28:40.803Z","dateUpdated":"2024-11-06T17:23:18.189Z","assignerShortName":"cisco","assignerOrgId":"d1c1063e-7a18-46af-9102-31f8928bc633","dateReserved":"2023-11-08T15:08:07.654Z"},"containers":{"cna":{"title":"Cisco Nexus 3550-F Switches Access Control List Programming Vulnerability","descriptions":[{"lang":"en","value":"A vulnerability in the access control list (ACL) programming of Cisco Nexus 3550-F Switches could allow an unauthenticated, remote attacker to send traffic that should be blocked to the management interface of an affected device. \r\n\r\nThis vulnerability exists because ACL deny rules are not properly enforced at the time of device reboot. An attacker could exploit this vulnerability by attempting to send traffic to the management interface of an affected device. A successful exploit could allow the attacker to send traffic to the management interface of the affected device."}],"affected":[{"vendor":"Cisco","product":"Cisco Nexus 3550 System Software","defaultStatus":"unknown","versions":[{"version":"3550-F_1.11.3","status":"affected"},{"version":"3550-F_1.12.0","status":"affected"},{"version":"3550-F_1.16.0","status":"affected"},{"version":"3550-F_1.17.1","status":"affected"},{"version":"3550-F_1.11.1","status":"affected"},{"version":"3550-F_1.11.2","status":"affected"},{"version":"3550-F_1.15.0","status":"affected"},{"version":"3550-F_1.13.0","status":"affected"},{"version":"3550-F_1.14.0","status":"affected"}]}],"references":[{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-3550-acl-bypass-mhskZc2q","name":"cisco-sa-3550-acl-bypass-mhskZc2q"}],"metrics":[{"format":"cvssV3_1","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","baseScore":5.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"NONE"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-264","lang":"en","description":"Permissions, Privileges, and Access Control","type":"cwe"}]}],"providerMetadata":{"shortName":"cisco","orgId":"d1c1063e-7a18-46af-9102-31f8928bc633","dateUpdated":"2024-11-06T16:28:40.803Z"},"exploits":[{"lang":"en","value":"The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."}],"source":{"advisory":"cisco-sa-3550-acl-bypass-mhskZc2q","discovery":"EXTERNAL","defects":["CSCwi98129"]}},"adp":[{"title":"CISA ADP Vulnrichment","affected":[{"vendor":"cisco","product":"nexus_3550_firmware","defaultStatus":"unknown","versions":[{"version":"3550-F_1.11.3","status":"affected"},{"version":"3550-F_1.12.0","status":"affected"},{"version":"3550-F_1.16.0","status":"affected"},{"version":"3550-F_1.17.1","status":"affected"},{"version":"3550-F_1.11.1","status":"affected"},{"version":"3550-F_1.11.2","status":"affected"},{"version":"3550-F_1.15.0","status":"affected"},{"version":"3550-F_1.13.0","status":"affected"},{"version":"3550-F_1.14.0","status":"affected"}],"cpes":["cpe:2.3:o:cisco:nexus_3550_firmware:*:*:*:*:*:*:*:*"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2024-11-06T17:21:00.515441Z","id":"CVE-2024-20371","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-11-06T17:23:18.189Z"}}]}}}