PT-2020-4439 · Cisco · Cisco Aironet Access Points

Published 2020-09-24 · Updated 2021-04-16 · CVE-2020-3552

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 Aironet Access Points (APs) Software (affected versions not specified)

Description: The issue is related to insufficient input validation in the Ethernet packet handling of the software. An unauthenticated, adjacent attacker could cause a denial of service (DoS) condition on an affected device by sending a series of specific packets within a short time frame to the Ethernet interface. This could result in a NULL pointer access, leading to a reload of the affected device.

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

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

BDU:2020-04979

CVE-2020-3552

Affected Products

Cisco Aironet Access Points

References · 4

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ap-ethport-dos-xtjTt8pY · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-04979 · Security Note
• https://osv.dev/vulnerability/CVE-2020-3552 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-3552 · Security Note