Input validation error in Cisco Catalyst 9800 Wireless Controller and Cisco IOS XE - CVE-2020-3428
Published: September 24, 2020 / Updated: September 29, 2020
Vulnerability identifier: #VU47142
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2020-3428
CWE-ID: CWE-20
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerable software:
Cisco Catalyst 9800 Wireless Controller
Cisco IOS XE
Cisco Catalyst 9800 Wireless Controller
Cisco IOS XE
Software vendor:
Cisco Systems, Inc
Cisco Systems, Inc
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to incorrect parsing of HTTP packets while performing HTTP-based endpoint device classifications. A remote attacker on the local network can send a specially crafted HTTP packet and perform a denial of service (DoS) attack.
This vulnerability affects the following products running a vulnerable release of Cisco IOS XE Software:
- Catalyst 9800 Embedded Wireless Controller for Catalyst 9300, 9400, and 9500 Series Switches
- Catalyst 9800 Series Wireless Controllers
Remediation
Install updates from vendor's website.