CVE-2019-1834: cisco aironet_access_point Improper Input Validation

Vulnerability summary

CVE-2019-1834 is a high (CVSS 7.4) Improper Input Validation vulnerability in cisco aironet_access_point. EPSS estimates a 0.63% chance of exploitation in the next 30 days, higher than 49.3% of scored vulnerabilities.

Timeline

1. 18-04-2019
   PublishedVulnerability first disclosed.
2. 21-11-2024
   Last modifiedVulnerability information updated.

Description

A vulnerability in the internal packet processing of Cisco Aironet Series Access Points (APs) could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected AP if the switch interface where the AP is connected has port security configured. The vulnerability exists because the AP forwards some malformed wireless client packets outside of the Control and Provisioning of Wireless Access Points (CAPWAP) tunnel. An attacker could exploit this vulnerability by sending crafted wireless packets to an affected AP. A successful exploit could allow the attacker to trigger a security violation on the adjacent switch port, which could result in a DoS condition. Note: Though the Common Vulnerability Scoring System (CVSS) score corresponds to a High Security Impact Rating (SIR), this vulnerability is considered Medium because a workaround is available and exploitation requires a specific switch configuration. There are workarounds that address this vulnerability.

• 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.