CVE-2021-1373: cisco cisco ios xe software Buffer Over-read

Vulnerability summary

CVE-2021-1373 is a high (CVSS 8.6) Buffer Over-read vulnerability in cisco cisco ios xe software. EPSS estimates a 1.55% chance of exploitation in the next 30 days, higher than 74.6% of scored vulnerabilities.

Timeline

1. 24-03-2021
   PublishedVulnerability first disclosed.
2. 08-11-2024
   Last modifiedVulnerability information updated.

Description

A vulnerability in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol processing of Cisco IOS XE Wireless Controller Software for the Cisco Catalyst 9000 Family 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 validation of CAPWAP packets. An attacker could exploit this vulnerability 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.

• CWE-126Buffer Over-readThe product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer.