PT-2020-4168 · Cisco · Cisco Ios Xe

Published 2020-09-24 · Updated 2021-10-19 · CVE-2020-3488

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 Software for Cisco Catalyst 9800 Series Wireless Controllers (affected versions not specified)

Description: The issue is related to insufficient validation of CAPWAP packets in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol processing. An unauthenticated, adjacent attacker could exploit this by sending a malformed CAPWAP packet to an affected device, causing it to crash and reload, resulting in a denial of service (DoS) condition.

Recommendations: For Cisco IOS XE Software for Cisco Catalyst 9800 Series Wireless Controllers, update to a version that includes the software updates released by Cisco to address these vulnerabilities. As a temporary workaround, consider restricting access to the CAPWAP protocol to minimize the risk of exploitation.

Fix

DoS

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2020-04590

CVE-2020-3488

Affected Products

Cisco Ios Xe

References · 6

• https://osv.dev/vulnerability/CVE-2020-3488 · Vendor Advisory
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-capwap-dos-TPdNTdyq · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-3488 · Security Note
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-capwap-dos-TPdNTdyq · Vendor Advisory
• https://safe-surf.ru/specialists/bulletins-nkcki/657130 · Security Note
• https://bdu.fstec.ru/vul/2020-04590 · Security Note