Cisco IOS XE Control/Provisioning Packet input validation

Summaryinfo

A vulnerability identified as problematic has been detected in Cisco IOS XE. This issue affects some unknown processing of the component Control/Provisioning. The manipulation as part of Packet leads to input validation. This vulnerability is documented as CVE-2020-3488. The attack requires being on the local network. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Cisco IOS XE (Router Operating System) (affected version not known). It has been rated as problematic. This issue affects some unknown functionality of the component Control/Provisioning. The manipulation as part of a Packet leads to a input validation vulnerability. Using CWE to declare the problem leads to 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. Impacted is availability. The summary by CVE is:

Multiple vulnerabilities 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, adjacent attacker to cause a denial of service (DoS) condition of an affected device. These vulnerabilities are due to insufficient validation of CAPWAP packets. An attacker could exploit these vulnerabilities by sending a malformed CAPWAP packet to an affected device. 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 released 09/24/2020 as cisco-sa-capwap-dos-TPdNTdyq as confirmed advisory (Website). It is possible to read the advisory at tools.cisco.com. The identification of this vulnerability is CVE-2020-3488 since 12/12/2019. The attack can only be initiated within the local network. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available.

Upgrading eliminates this vulnerability.

Entries connected to this vulnerability are available at VDB-161889, VDB-161890, VDB-161892 and VDB-161894. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Router Operating System

Vendor

• Cisco

Name

• IOS XE

License

• commercial

Website

• Vendor: https://www.cisco.com/

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion