CVE-2022-20678

published 2022-04-15

CVE-2022-20678: A vulnerability in the AppNav-XE feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload…

Priority P3 42 high 7.5 CVSS 3.1

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

A vulnerability in the AppNav-XE feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. This vulnerability is due to the incorrect handling of certain TCP segments. An attacker could exploit this vulnerability by sending a stream of crafted TCP traffic at a high rate through an interface of an affected device. That interface would need to have AppNav interception enabled. A successful exploit could allow the attacker to cause the device to reload.

Affected

6 ranges

Vendor	Product	Version range	Fixed in
cisco	cisco_ios_xe_software	—	—
cisco	ios_xe	—	—
cisco	ios_xe	—	—
cisco	ios_xe	—	—
cisco	ios_xe	—	—
cisco	ios_xe	—	—

CVSS provenance

nvd v3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

nvd v2.0 7.8 HIGH AV:N/AC:L/Au:N/C:N/I:N/A:C

vendor_cisco 8.6 HIGH

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