A vulnerability in the DNS application layer gateway (ALG) functionality used by Network Address Translation (NAT) in Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to a logic error that occurs when an affected device inspects certain DNS packets. An attacker could exploit this vulnerability by sending crafted DNS packets through an affected device that is performing NAT for DNS packets. A successful exploit could allow an attacker to cause the device to reload, resulting in a denial of service (DoS) condition on an affected device. The vulnerability can be exploited only by traffic that is sent through an affected device via IPv4 packets. The vulnerability cannot be exploited via IPv6 traffic.
History

Sat, 09 Nov 2024 00:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published: 2021-03-24T20:06:20.372091Z

Updated: 2024-11-08T23:34:59.559Z

Reserved: 2020-11-13T00:00:00

Link: CVE-2021-1446

cve-icon Vulnrichment

Updated: 2024-08-03T16:11:17.292Z

cve-icon NVD

Status : Modified

Published: 2021-03-24T20:15:15.307

Modified: 2023-11-07T03:28:19.810

Link: CVE-2021-1446

cve-icon Redhat

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