CVE-2022-20945: cisco catalyst_9800-40_firmware Classic Buffer Overflow

Vulnerability summary

CVE-2022-20945 is a high (CVSS 7.4) Classic Buffer Overflow vulnerability in cisco catalyst_9800-40_firmware. EPSS estimates a 0.46% chance of exploitation in the next 30 days, higher than 38.7% of scored vulnerabilities.

Timeline

1. 30-09-2022
   PublishedVulnerability first disclosed.
2. 01-11-2024
   Last modifiedVulnerability information updated.

Description

A vulnerability in the 802.11 association frame validation of Cisco Catalyst 9100 Series Access Points (APs) could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient input validation of certain parameters within association request frames received by the AP. An attacker could exploit this vulnerability by sending a crafted 802.11 association request to a nearby device. An exploit could allow the attacker to unexpectedly reload the device, resulting in a DoS condition.

• CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.
• CWE-20Improper Input ValidationThe 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.