National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2019-15261 Detail

Current 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.

Source:  MITRE
View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score: 8.6 HIGH
Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Nist CVSS score does not match with CNA score
CNA:  Cisco Systems, Inc.
Base Score: 8.6 HIGH
Vector:  CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191016-airo-pptp-dos Vendor Advisory

Weakness Enumeration

CWE-ID CWE Name Source
CWE-20 Improper Input Validation NIST   Cisco Systems, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:o:cisco:aironet_1810_firmware:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
8.4
Up to (excluding)
8.5.151.0
 cpe:2.3:o:cisco:aironet_1810_firmware:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
8.8
Up to (excluding)
8.8.125.0
 cpe:2.3:o:cisco:aironet_1810_firmware:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
8.9
Up to (excluding)
8.9.111.0
Running on/with
 cpe:2.3:h:cisco:aironet_1810:-:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 2 ( hide )
 cpe:2.3:o:cisco:aironet_1830_firmware:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
8.4
Up to (excluding)
8.5.151.0
 cpe:2.3:o:cisco:aironet_1830_firmware:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
8.8
Up to (excluding)
8.8.125.0
 cpe:2.3:o:cisco:aironet_1830_firmware:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
8.9
Up to (excluding)
8.9.111.0
Running on/with
 cpe:2.3:h:cisco:aironet_1830:-:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 3 ( hide )
 cpe:2.3:o:cisco:aironet_1850_firmware:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
8.4
Up to (excluding)
8.5.151.0
 cpe:2.3:o:cisco:aironet_1850_firmware:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
8.8
Up to (excluding)
8.8.125.0
 cpe:2.3:o:cisco:aironet_1850_firmware:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
8.9
Up to (excluding)
8.9.111.0
Running on/with
 cpe:2.3:h:cisco:aironet_1850:-:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

1 change record found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-15261
NVD Published Date:
10/16/2019
NVD Last Modified:
10/22/2019