Cisco IOS XE SNMP Trap Parameter input validation

Summaryinfo

A vulnerability was found in Cisco IOS XE. It has been rated as problematic. The impacted element is an unknown function of the component SNMP Trap Handler. The manipulation as part of Parameter leads to input validation. This vulnerability is documented as CVE-2020-3390. The attack requires being on the local network. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Cisco IOS XE (Router Operating System) (version unknown) and classified as problematic. This issue affects an unknown function of the component SNMP Trap Handler. The manipulation as part of a Parameter 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:

A vulnerability in Simple Network Management Protocol (SNMP) trap generation for wireless clients of the Cisco IOS XE Wireless Controller Software for the Cisco Catalyst 9000 Family could allow an unauthenticated, adjacent attacker to cause the device to unexpectedly reload, causing a denial of service (DoS) condition on an affected device. The vulnerability is due to the lack of input validation of the information used to generate an SNMP trap in relation to a wireless client connection. An attacker could exploit this vulnerability by sending an 802.1x packet with crafted parameters during the wireless authentication setup phase of a connection. A successful exploit could allow the attacker to cause the device to reload, causing a DoS condition.

The weakness was released 09/24/2020 as cisco-sa-iosxe-ewlc-snmp-dos-w as confirmed advisory (Website). The advisory is shared at tools.cisco.com. The identification of this vulnerability is CVE-2020-3390 since 12/12/2019. The attack needs to approached within the local network. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

Upgrading eliminates this vulnerability.

Entries connected to this vulnerability are available at VDB-161865, VDB-161864, VDB-161863 and VDB-161862. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Router Operating System

Vendor

• Cisco

Name

• IOS XE

License

• commercial

Website

• Vendor: https://www.cisco.com/

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Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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