CVE Vulnerabilities

CVE-2022-20683

Buffer Underwrite ('Buffer Underflow')

Published: Apr 15, 2022 | Modified: Nov 21, 2024
CVSS 3.x
8.6
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CVSS 2.x
7.8 HIGH
AV:N/AC:L/Au:N/C:N/I:N/A:C
RedHat/V2
RedHat/V3
Ubuntu

A vulnerability in the Application Visibility and Control (AVC-FNF) feature of Cisco IOS XE Software for Cisco Catalyst 9800 Series Wireless Controllers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient packet verification for traffic inspected by the AVC feature. An attacker could exploit this vulnerability by sending crafted packets from the wired network to a wireless client, resulting in the crafted packets being processed by the wireless controller. A successful exploit could allow the attacker to cause a crash and reload of the affected device, resulting in a DoS condition.

Weakness

The product writes to a buffer using an index or pointer that references a memory location prior to the beginning of the buffer.

Affected Software

Name Vendor Start Version End Version
Ios_xe Cisco 3.15.1xbs (including) 3.15.1xbs (including)
Ios_xe Cisco 3.15.2xbs (including) 3.15.2xbs (including)
Ios_xe Cisco 16.7.2 (including) 16.7.2 (including)
Ios_xe Cisco 16.7.3 (including) 16.7.3 (including)
Ios_xe Cisco 16.7.4 (including) 16.7.4 (including)
Ios_xe Cisco 16.8.1 (including) 16.8.1 (including)
Ios_xe Cisco 16.8.1a (including) 16.8.1a (including)
Ios_xe Cisco 16.8.1b (including) 16.8.1b (including)
Ios_xe Cisco 16.8.1c (including) 16.8.1c (including)
Ios_xe Cisco 16.8.1d (including) 16.8.1d (including)
Ios_xe Cisco 16.8.1e (including) 16.8.1e (including)
Ios_xe Cisco 16.8.1s (including) 16.8.1s (including)
Ios_xe Cisco 16.8.2 (including) 16.8.2 (including)
Ios_xe Cisco 16.8.3 (including) 16.8.3 (including)
Ios_xe Cisco 16.9.1 (including) 16.9.1 (including)
Ios_xe Cisco 16.9.1a (including) 16.9.1a (including)
Ios_xe Cisco 16.9.1b (including) 16.9.1b (including)
Ios_xe Cisco 16.9.1c (including) 16.9.1c (including)
Ios_xe Cisco 16.9.1d (including) 16.9.1d (including)
Ios_xe Cisco 16.9.1s (including) 16.9.1s (including)
Ios_xe Cisco 16.9.2 (including) 16.9.2 (including)
Ios_xe Cisco 16.9.2a (including) 16.9.2a (including)
Ios_xe Cisco 16.9.2s (including) 16.9.2s (including)
Ios_xe Cisco 16.9.3 (including) 16.9.3 (including)
Ios_xe Cisco 16.9.3a (including) 16.9.3a (including)
Ios_xe Cisco 16.9.3h (including) 16.9.3h (including)
Ios_xe Cisco 16.9.3s (including) 16.9.3s (including)
Ios_xe Cisco 16.9.4 (including) 16.9.4 (including)
Ios_xe Cisco 16.9.4c (including) 16.9.4c (including)
Ios_xe Cisco 16.9.5 (including) 16.9.5 (including)
Ios_xe Cisco 16.9.5f (including) 16.9.5f (including)
Ios_xe Cisco 16.9.6 (including) 16.9.6 (including)
Ios_xe Cisco 16.9.7 (including) 16.9.7 (including)
Ios_xe Cisco 16.9.8 (including) 16.9.8 (including)
Ios_xe Cisco 16.10.1 (including) 16.10.1 (including)
Ios_xe Cisco 16.10.1a (including) 16.10.1a (including)
Ios_xe Cisco 16.10.1b (including) 16.10.1b (including)
Ios_xe Cisco 16.10.1c (including) 16.10.1c (including)
Ios_xe Cisco 16.10.1d (including) 16.10.1d (including)
Ios_xe Cisco 16.10.1e (including) 16.10.1e (including)
Ios_xe Cisco 16.10.1f (including) 16.10.1f (including)
Ios_xe Cisco 16.10.1g (including) 16.10.1g (including)
Ios_xe Cisco 16.10.1s (including) 16.10.1s (including)
Ios_xe Cisco 16.10.2 (including) 16.10.2 (including)
Ios_xe Cisco 16.10.3 (including) 16.10.3 (including)
Ios_xe Cisco 16.11.1 (including) 16.11.1 (including)
Ios_xe Cisco 16.11.1a (including) 16.11.1a (including)
Ios_xe Cisco 16.11.1b (including) 16.11.1b (including)
Ios_xe Cisco 16.11.1c (including) 16.11.1c (including)
Ios_xe Cisco 16.11.1s (including) 16.11.1s (including)
Ios_xe Cisco 16.11.2 (including) 16.11.2 (including)
Ios_xe Cisco 16.12.1 (including) 16.12.1 (including)
Ios_xe Cisco 16.12.1a (including) 16.12.1a (including)
Ios_xe Cisco 16.12.1c (including) 16.12.1c (including)
Ios_xe Cisco 16.12.1s (including) 16.12.1s (including)
Ios_xe Cisco 16.12.1t (including) 16.12.1t (including)
Ios_xe Cisco 16.12.1w (including) 16.12.1w (including)
Ios_xe Cisco 16.12.1x (including) 16.12.1x (including)
Ios_xe Cisco 16.12.1y (including) 16.12.1y (including)
Ios_xe Cisco 16.12.1z (including) 16.12.1z (including)
Ios_xe Cisco 16.12.1z1 (including) 16.12.1z1 (including)
Ios_xe Cisco 16.12.1z2 (including) 16.12.1z2 (including)
Ios_xe Cisco 16.12.2 (including) 16.12.2 (including)
Ios_xe Cisco 16.12.2a (including) 16.12.2a (including)
Ios_xe Cisco 16.12.2s (including) 16.12.2s (including)
Ios_xe Cisco 16.12.2t (including) 16.12.2t (including)
Ios_xe Cisco 16.12.3 (including) 16.12.3 (including)
Ios_xe Cisco 16.12.3a (including) 16.12.3a (including)
Ios_xe Cisco 16.12.3s (including) 16.12.3s (including)
Ios_xe Cisco 16.12.4 (including) 16.12.4 (including)
Ios_xe Cisco 16.12.4a (including) 16.12.4a (including)
Ios_xe Cisco 16.12.5 (including) 16.12.5 (including)
Ios_xe Cisco 16.12.5a (including) 16.12.5a (including)
Ios_xe Cisco 16.12.5b (including) 16.12.5b (including)
Ios_xe Cisco 16.12.6 (including) 16.12.6 (including)
Ios_xe Cisco 16.12.6a (including) 16.12.6a (including)
Ios_xe Cisco 17.1.1 (including) 17.1.1 (including)
Ios_xe Cisco 17.1.1a (including) 17.1.1a (including)
Ios_xe Cisco 17.1.1s (including) 17.1.1s (including)
Ios_xe Cisco 17.1.1t (including) 17.1.1t (including)
Ios_xe Cisco 17.1.2 (including) 17.1.2 (including)
Ios_xe Cisco 17.1.3 (including) 17.1.3 (including)
Ios_xe Cisco 17.2.1 (including) 17.2.1 (including)
Ios_xe Cisco 17.2.1a (including) 17.2.1a (including)
Ios_xe Cisco 17.2.1r (including) 17.2.1r (including)
Ios_xe Cisco 17.2.1v (including) 17.2.1v (including)
Ios_xe Cisco 17.2.2 (including) 17.2.2 (including)
Ios_xe Cisco 17.2.3 (including) 17.2.3 (including)
Ios_xe Cisco 17.3.1 (including) 17.3.1 (including)
Ios_xe Cisco 17.3.1a (including) 17.3.1a (including)
Ios_xe Cisco 17.3.1w (including) 17.3.1w (including)
Ios_xe Cisco 17.3.1x (including) 17.3.1x (including)
Ios_xe Cisco 17.3.1z (including) 17.3.1z (including)
Ios_xe Cisco 17.3.2 (including) 17.3.2 (including)
Ios_xe Cisco 17.3.2a (including) 17.3.2a (including)
Ios_xe Cisco 17.4.1 (including) 17.4.1 (including)
Ios_xe Cisco 17.4.1a (including) 17.4.1a (including)
Ios_xe Cisco 17.4.1b (including) 17.4.1b (including)
Ios_xe Cisco 17.4.1c (including) 17.4.1c (including)
Ios_xe Cisco 17.4.2 (including) 17.4.2 (including)
Ios_xe Cisco 17.4.2a (including) 17.4.2a (including)

Potential Mitigations

References