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.
This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 8.6, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 6 products from cisco, from cisco, from cisco and 3 others, organizations running these solutions should prioritize assessment and patching.
First disclosed in 2019, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.
2019-10-16T19:15:13.847
2024-11-21T04:28:19.067
Modified
CVSSv3.1: 8.6 (HIGH)
AV:N/AC:L/Au:N/C:N/I:N/A:C
10.0
6.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | cisco | aironet_1810_firmware | < 8.5.151.0 | Yes |
| Operating System | cisco | aironet_1810_firmware | < 8.8.125.0 | Yes |
| Operating System | cisco | aironet_1810_firmware | < 8.9.111.0 | Yes |
| Hardware | cisco | aironet_1810 | - | No |
| Operating System | cisco | aironet_1830_firmware | < 8.5.151.0 | Yes |
| Operating System | cisco | aironet_1830_firmware | < 8.8.125.0 | Yes |
| Operating System | cisco | aironet_1830_firmware | < 8.9.111.0 | Yes |
| Hardware | cisco | aironet_1830 | - | No |
| Operating System | cisco | aironet_1850_firmware | < 8.5.151.0 | Yes |
| Operating System | cisco | aironet_1850_firmware | < 8.8.125.0 | Yes |
| Operating System | cisco | aironet_1850_firmware | < 8.9.111.0 | Yes |
| Hardware | cisco | aironet_1850 | - | No |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For cisco's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.