A vulnerability in the DNS application layer gateway (ALG) functionality that is used by Network Address Translation (NAT) in Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. This vulnerability is due to a logic error that occurs when an affected device inspects certain TCP DNS packets. An attacker could exploit this vulnerability by sending crafted DNS packets through the affected device that is performing NAT for DNS packets. A successful exploit could allow the attacker to cause the device to reload, resulting in a denial of service (DoS) condition on the affected device. Note: This vulnerability can be exploited only by sending IPv4 TCP packets through an affected device. This vulnerability cannot be exploited by sending IPv6 traffic.
Metrics
Affected Vendors & Products
References
History
Fri, 01 Nov 2024 19:15:00 +0000
Type | Values Removed | Values Added |
---|---|---|
Metrics |
ssvc
|

Status: PUBLISHED
Assigner: cisco
Published:
Updated: 2024-11-01T18:49:14.323Z
Reserved: 2021-11-02T00:00:00
Link: CVE-2022-20837

Updated: 2024-08-03T02:24:49.955Z

Status : Modified
Published: 2022-10-10T21:15:10.137
Modified: 2024-11-21T06:43:39.510
Link: CVE-2022-20837

No data.