Cisco IOS XE IEEE 802.11w Protected Management Frame input validation

Summaryinfo

A vulnerability has been found in Cisco IOS XE and classified as problematic. This impacts an unknown function of the component IEEE 802.11w Protected Management Frame Handler. Performing a manipulation results in input validation. This vulnerability was named CVE-2020-3206. The attack needs to be approached within the local network. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic has been found in Cisco IOS XE (Router Operating System) (the affected version unknown). This affects an unknown part of the component IEEE 802.11w Protected Management Frame Handler. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. The summary by CVE is:

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.

The weakness was presented 06/03/2020 as cisco-sa-ewlc-dos-AnvKvMxR as confirmed advisory (Website). The advisory is shared at tools.cisco.com. This vulnerability is uniquely identified as CVE-2020-3206 since 12/12/2019. The attack needs to be done within the local network. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available.

Upgrading eliminates this vulnerability.

See VDB-156036, VDB-156034 and VDB-156030 for similar entries. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Router Operating System

Vendor

• Cisco

Name

• IOS XE

License

• commercial

Website

• Vendor: https://www.cisco.com/

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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