Vulnerability · Published Jun 3, 2020 · Assigned by cisco

CVE-2020-3206Cisco IOS XE Software Catalyst 9800 Series Wireless Controllers Denial of Service Vulnerability

Medium 4.7

In plain English

A medium-severity improper input validation in Cisco IOS XE Software 16.10.1 from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 41% of all known vulnerabilities).

Severity (CVSS 3.0)4.7Medium

Exploit odds (30 days)0.5%top 59.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A vulnerability in the handling of IEEE 802.11w Protected Management Frames (PMFs) of Cisco Catalyst 9800 Series Wireless Controllers that are running Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to terminate a valid user connection to an affected device. The vulnerability exists because the affected software does not properly validate 802.11w disassociation and deauthentication PMFs that it receives. An attacker could exploit this vulnerability by sending a spoofed 802.11w PMF from a valid, authenticated client on a network adjacent to an affected device. A successful exploit could allow the attacker to terminate a single valid user connection to the affected device.

Affected products (as reported)

Vendor	Product	Versions
Cisco	Cisco IOS XE Software 16.10.1	n/a

Weakness: CWE-20 · Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L

References

20200603 Cisco IOS XE Software Catalyst 9800 Series Wireless Controllers Denial of Service Vulnerability vendor-advisory, x_refsource_CISCO