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.
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Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: cisco
Published: 2019-10-16T18:36:39.319975Z
Updated: 2024-09-16T17:03:47.584Z
Reserved: 2019-08-20T00:00:00
Link: CVE-2019-15261
Vulnrichment
No data.
NVD
Status : Analyzed
Published: 2019-10-16T19:15:13.847
Modified: 2019-10-22T19:51:02.877
Link: CVE-2019-15261
Redhat
No data.