{"api_version":"1","generated_at":"2026-04-26T23:31:19+00:00","cve":"CVE-2023-20040","urls":{"html":"https://cve.report/CVE-2023-20040","api":"https://cve.report/api/cve/CVE-2023-20040.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2023-20040","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-20040"},"summary":{"title":"CVE-2023-20040","description":"A vulnerability in the NETCONF service of Cisco Network Services Orchestrator (NSO) could allow an authenticated, remote attacker to cause a denial of service (DoS) on an affected system that is running as the root user. To exploit this vulnerability, the attacker must be a member of the admin group. This vulnerability exists because user-supplied input is not properly validated when NETCONF is used to upload packages to an affected device. An attacker could exploit this vulnerability by uploading a specially crafted package file. A successful exploit could allow the attacker to write crafted files to arbitrary locations on the filesystem or delete arbitrary files from the filesystem of an affected device, resulting in a DoS condition. 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Note: By default, during install, Cisco NSO will be set up to run as the root user unless the --run-as-user option is used."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"affects":{"vendor":{"vendor_data":[{"vendor_name":"Cisco","product":{"product_data":[{"product_name":"Cisco Network Services Orchestrator","version":{"version_data":[{"version_value":"N/A","version_affected":"="}]}}]}}]}},"references":{"reference_data":[{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nso-path-trvsl-zjBeMkZg","refsource":"MISC","name":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nso-path-trvsl-zjBeMkZg"}]},"source":{"advisory":"cisco-sa-nso-path-trvsl-zjBeMkZg","discovery":"INTERNAL","defects":["CSCwb11065"]},"exploit":[{"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."}],"impact":{"cvss":[{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"HIGH"}]}},"nvd":{"publishedDate":"2023-01-20 07:15:00","lastModifiedDate":"2024-01-25 17:15:00","problem_types":["CWE-434"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"HIGH","baseScore":5.5,"baseSeverity":"MEDIUM"},"exploitabilityScore":1.2,"impactScore":4.2}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:cisco:network_services_orchestrator:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"5.7.4","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:cisco:network_services_orchestrator:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"5.6.7","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:cisco:network_services_orchestrator:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.5.6","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:cisco:network_services_orchestrator:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"5.4.7","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:cisco:network_services_orchestrator:5.8:*:*:*:*:*:*:*","cpe_name":[]}]}]}},"legacy_mitre":{"record":null,"notes":[]}}}