CVE-2024-20446

published 2024-08-28

CVE-2024-20446: A vulnerability in the DHCPv6 relay agent of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition…

Priority P3 51 high 8.6 CVSS 3.1

AV N AC L PR N UI N S C C N I N A H

A vulnerability in the DHCPv6 relay agent of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.

This vulnerability is due to improper handling of specific fields in a DHCPv6 RELAY-REPLY message. An attacker could exploit this vulnerability by sending a crafted DHCPv6 packet to any IPv6 address that is configured on an affected device. A successful exploit could allow the attacker to cause the dhcp_snoop process to crash and restart multiple times, causing the affected device to reload and resulting in a DoS condition.

Affected

5 ranges

Vendor	Product	Version range	Fixed in
cisco	cisco_nx-os_software	—	—
cisco	cisco_nx-os_software	—	—
cisco	cisco_nx-os_software	—	—
cisco	cisco_nx-os_software	—	—
cisco	nx-os	—	—

CVSS provenance

nvd v3.1 8.6 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

vendor_cisco 8.6 HIGH

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