Cisco Aironet 1800 on QCA 802.11 Association Request input validation

Summaryinfo

A vulnerability marked as problematic has been reported in Cisco Aironet 1800 on QCA. The impacted element is an unknown function of the component 802.11 Association Request Handler. This manipulation causes input validation. The identification of this vulnerability is CVE-2018-0249. The attack needs to be done within the local network. There is no exploit available.

Detailsinfo

A vulnerability classified as problematic was found in Cisco Aironet 1800 on QCA (Wireless LAN Software) (the affected version is unknown). Affected by this vulnerability is an unknown code of the component 802.11 Association Request Handler. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability. The summary by CVE is:

A vulnerability when handling incoming 802.11 Association Requests for Cisco Aironet 1800 Series Access Point (APs) on Qualcomm Atheros (QCA) based hardware platforms could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected system. A successful exploit could prevent new clients from joining the AP. The vulnerability is due to incorrect handling of malformed or invalid 802.11 Association Requests. An attacker could exploit this vulnerability by sending a malformed stream of 802.11 Association Requests to the local interface of the targeted device. A successful exploit could allow the attacker to cause a DoS situation on an affected system, causing new client 802.11 Association Requests to fail. This vulnerability affects the following Cisco products: Aironet 1560 Series Access Points, Aironet 1810 Series OfficeExtend Access Points, Aironet 1810w Series Access Points, Aironet 1815 Series Access Points, Aironet 1830 Series Access Points, Aironet 1850 Series Access Points, Aironet 2800 Series Access Points, Aironet 3800 Series Access Points. Cisco Bug IDs: CSCvg02116.

The bug was discovered 05/02/2018. The weakness was shared 05/02/2018 as cisco-sa-20180502-aironet-dos as confirmed advisory (Website). The advisory is shared at tools.cisco.com. This vulnerability is known as CVE-2018-0249 since 11/27/2017. The attack needs to be initiated within the local network. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 03/08/2023).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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

Productinfo

Type

• Wireless LAN Software

Vendor

• Cisco

Name

• Aironet 1800

License

• commercial

Website

• Vendor: https://www.cisco.com/

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

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