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43 lines
2.0 KiB
JSON
43 lines
2.0 KiB
JSON
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{
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"id": "CVE-2023-20169",
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"sourceIdentifier": "ykramarz@cisco.com",
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"published": "2023-08-23T19:15:07.893",
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"lastModified": "2023-08-23T19:15:07.893",
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"vulnStatus": "Received",
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"descriptions": [
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{
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"lang": "en",
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"value": "A vulnerability in the Intermediate System-to-Intermediate System (IS-IS) protocol of Cisco NX-OS Software for the Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches in standalone NX-OS mode could allow an unauthenticated, adjacent attacker to cause the IS-IS process to unexpectedly restart, which could cause an affected device to reload.\r\n\r This vulnerability is due to insufficient input validation when parsing an ingress IS-IS packet. An attacker could exploit this vulnerability by sending a crafted IS-IS packet to an affected device. A successful exploit could allow the attacker to cause a denial of service (DoS) condition due to the unexpected restart of the IS-IS process, which could cause the affected device to reload. Note: The IS-IS protocol is a routing protocol. To exploit this vulnerability, an attacker must be Layer 2 adjacent to the affected device."
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}
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],
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"metrics": {
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"cvssMetricV31": [
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{
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"source": "ykramarz@cisco.com",
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"type": "Secondary",
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"cvssData": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
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"attackVector": "ADJACENT_NETWORK",
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"attackComplexity": "LOW",
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"privilegesRequired": "NONE",
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"userInteraction": "NONE",
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"scope": "CHANGED",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"availabilityImpact": "HIGH",
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"baseScore": 7.4,
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"baseSeverity": "HIGH"
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},
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"exploitabilityScore": 2.8,
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"impactScore": 4.0
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}
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]
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},
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"references": [
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{
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"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-n3_9k-isis-dos-FTCXB4Vb",
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"source": "ykramarz@cisco.com"
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}
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]
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}
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