CVE-2023-20169 (GCVE-0-2023-20169)

Vulnerability from cvelistv5 – Published: 2023-08-23 18:19 – Updated: 2024-08-02 09:05
VLAI?
Summary
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. 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.
Severity ?
7.4 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CWE
  • CWE-788 - Access of Memory Location After End of Buffer
Assigner
References
Impacted products
Vendor Product Version
Cisco Cisco NX-OS Software Affected: 10.3(2)
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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