PT-2020-4436 · Cisco · Cisco Ios Xe

Published 2020-09-24 · Updated 2021-10-19 · CVE-2020-3497

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 errors in processing input data in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol implementation. This could allow a remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerabilities are due to insufficient validation of CAPWAP packets. An attacker could exploit these vulnerabilities by sending a malformed CAPWAP packet to an affected device, potentially causing the device to crash and reload.

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:2020-04975

CVE-2020-3497

Affected Products

Cisco Ios Xe

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2020-3497 · Security Note
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-capwap-dos-TPdNTdyq · Vendor Advisory
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-capwap-dos-TPdNTdyq · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-04975 · Security Note
• https://safe-surf.ru/specialists/bulletins-nkcki/657130 · Security Note
• https://osv.dev/vulnerability/CVE-2020-3497 · Vendor Advisory