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5
CVSSv2

CVE-2021-1377

Published: 24/03/2021 Updated: 07/11/2023
CVSS v2 Base Score: 5 | Impact Score: 2.9 | Exploitability Score: 10
CVSS v3 Base Score: 5.8 | Impact Score: 1.4 | Exploitability Score: 3.9
VMScore: 445
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
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Vulnerability Summary

A vulnerability in Address Resolution Protocol (ARP) management of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote malicious user to prevent an affected device from resolving ARP entries for legitimate hosts on the connected subnets. This vulnerability exists because ARP entries are mismanaged. An attacker could exploit this vulnerability by continuously sending traffic that results in incomplete ARP entries. A successful exploit could allow the malicious user to cause ARP requests on the device to be unsuccessful for legitimate hosts, resulting in a denial of service (DoS) condition.

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Vendor Advisories

Cisco: Cisco IOS and IOS XE Software ARP Resource Management Exhaustion Denial of Service Vulnerability
A vulnerability in Address Resolution Protocol (ARP) management of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to prevent an affected device from resolving ARP entries for legitimate hosts on the connected subnets This vulnerability exists because ARP entries are mismanaged An attacker could exploi ...

References

NVD-CWE-noinfohttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-arp-mtfhBfjEhttps://nvd.nist.govhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-arp-mtfhBfjE
CVSSv2
CVSSv2
CVSSv3
VMScore
Recommendations:
CVE-2024-21111CVE-2024-32884IDORCVE-2023-1000CVE-2024-33260CVE-2024-3682reflected XSSrace conditionCVE-2024-3400
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