CVE-2019-15261: cisco aironet_1810_firmware Improper Input Validation

Vulnerability summary

CVE-2019-15261 is a high (CVSS 8.6) Improper Input Validation vulnerability in cisco aironet_1810_firmware. EPSS estimates a 1.37% chance of exploitation in the next 30 days, higher than 71.5% of scored vulnerabilities.

Timeline

1. 16-10-2019
   PublishedVulnerability first disclosed.
2. 19-11-2024
   Last modifiedVulnerability information updated.

Description

A vulnerability in the Point-to-Point Tunneling Protocol (PPTP) VPN packet processing functionality in Cisco Aironet Access Points (APs) could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient validation of Generic Routing Encapsulation (GRE) frames that pass through the data plane of an affected AP. An attacker could exploit this vulnerability by associating to a vulnerable AP, initiating a PPTP VPN connection to an arbitrary PPTP VPN server, and sending a malicious GRE frame through the data plane of the AP. A successful exploit could allow the attacker to cause an internal process of the targeted AP to crash, which in turn would cause the AP to reload. The AP reload would cause a DoS condition for clients that are associated with the AP.

• 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.