Vulnerability Details : CVE-2019-15261
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.
Vulnerability category: Input validationDenial of service
Products affected by CVE-2019-15261
- cpe:2.3:o:cisco:aironet_1850_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:aironet_1850_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:aironet_1850_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:aironet_1810_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:aironet_1810_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:aironet_1810_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:aironet_1830_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:aironet_1830_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:aironet_1830_firmware:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-15261
0.16%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 52 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-15261
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
7.8
|
HIGH | AV:N/AC:L/Au:N/C:N/I:N/A:C |
10.0
|
6.9
|
NIST | |
8.6
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H |
3.9
|
4.0
|
Cisco Systems, Inc. | |
8.6
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H |
3.9
|
4.0
|
NIST |
CWE ids for CVE-2019-15261
-
The 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.Assigned by:
- nvd@nist.gov (Primary)
- ykramarz@cisco.com (Secondary)
References for CVE-2019-15261
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191016-airo-pptp-dos
Cisco Aironet Access Points Point-to-Point Tunneling Protocol Denial of Service VulnerabilityVendor Advisory
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