PT-2020-4186 · Cisco · Cisco Ios Xe Wireless Controller+1

Published 2020-09-24 · Updated 2021-08-06 · CVE-2020-3429

Positive Technologies (AI Summary)

CVSS v3.1

7.4

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: Cisco IOS XE Wireless Controller Software for the Cisco Catalyst 9000 Family (affected versions not specified)

Description: A vulnerability in the WPA2 and WPA3 security implementation could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. The issue is due to incorrect packet processing during the WPA2 and WPA3 authentication handshake when configured for dot1x or pre-shared key (PSK) authentication key management (AKM) with 802.11r BSS Fast Transition (FT) enabled. An attacker could exploit this by sending a crafted authentication packet to an affected device, potentially causing it to reload and resulting in a DoS condition. Valid credentials for dot1x or PSK AKM to access the WLAN are required to exploit this vulnerability.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2020-04608

CVE-2020-3429

Affected Products

Cisco Ios Xe Wireless Controller

Cisco Ios Xe

References · 6

• https://bdu.fstec.ru/vul/2020-04608 · Security Note
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wpa-dos-cXshjerc · Vendor Advisory
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wpa-dos-cXshjerc · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-3429 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-3429 · Security Note
• https://safe-surf.ru/specialists/bulletins-nkcki/657130 · Security Note