Out-of-bounds read in Cisco Systems, Inc products - CVE-2020-3399

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Main Vulnerability Database Vulnerabilities #VU47151

Out-of-bounds read in Cisco Systems, Inc products - CVE-2020-3399

Published: September 24, 2020 / Updated: September 29, 2020


Vulnerability identifier: #VU47151
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-3399
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Cisco Catalyst 9800 Wireless Controller
Cisco Embedded Wireless Controller on Catalyst 9100 Access Points
Cisco IOS XE
Software vendor:
Cisco Systems, Inc

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol. A remote attacker can send a specially crafted CAPWAP packet, trigger out-of-bounds read error and cause a denial of service condition on the system.

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
  • Embedded Wireless Controller on Catalyst 9100 Access Points

Remediation

Install updates from vendor's website.

External links