Cisco IOS XE Control/Provisioning Packet buffer over-read

Summaryinfo

A vulnerability labeled as problematic has been found in Cisco IOS XE. Affected is an unknown function of the component Control/Provisioning. Such manipulation as part of Packet leads to buffer over-read. This vulnerability is traded as CVE-2020-3399. The attack may be launched remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Cisco IOS XE (Router Operating System) (the affected version unknown). It has been rated as problematic. Affected by this issue is an unknown part of the component Control/Provisioning. The manipulation as part of a Packet leads to a buffer over-read vulnerability. Using CWE to declare the problem leads to CWE-126. The product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer. Impacted is availability. CVE summarizes:

A vulnerability in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol processing of Cisco IOS XE Software for Cisco Catalyst 9800 Series Wireless Controllers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition of an affected device. The vulnerability is due to insufficient input validation during CAPWAP packet processing. An attacker could exploit this vulnerability by sending a crafted CAPWAP packet to an affected device, resulting in a buffer over-read. A successful exploit could allow the attacker to cause the affected device to crash and reload, resulting in a DoS condition on the affected device.

The weakness was shared 09/24/2020 as cisco-sa-capwap-dos-ShFzXf as confirmed advisory (Website). The advisory is shared for download at tools.cisco.com. This vulnerability is handled as CVE-2020-3399 since 12/12/2019. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

Upgrading eliminates this vulnerability.

The entries VDB-161866, VDB-161865, VDB-161863 and VDB-161862 are related to this item. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Router Operating System

Vendor

• Cisco

Name

• IOS XE

License

• commercial

Website

• Vendor: https://www.cisco.com/

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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