CVE-2019-15261
CVSS V2 High 7.8
CVSS V3 High 8.6
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.
Overview
- CVE ID
- CVE-2019-15261
- Assigner
- ykramarz@cisco.com
- Vulnerability Status
- Analyzed
- Published Version
- 2019-10-16T19:15:13
- Last Modified Date
- 2019-10-22T19:51:02
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| AND | ||||
| cpe:2.3:o:cisco:aironet_1810_firmware:*:*:*:*:*:*:*:* | 1 | OR | 8.4 | 8.5.151.0 |
| cpe:2.3:o:cisco:aironet_1810_firmware:*:*:*:*:*:*:*:* | 1 | OR | 8.8 | 8.8.125.0 |
| cpe:2.3:o:cisco:aironet_1810_firmware:*:*:*:*:*:*:*:* | 1 | OR | 8.9 | 8.9.111.0 |
| cpe:2.3:h:cisco:aironet_1810:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:cisco:aironet_1830_firmware:*:*:*:*:*:*:*:* | 1 | OR | 8.4 | 8.5.151.0 |
| cpe:2.3:o:cisco:aironet_1830_firmware:*:*:*:*:*:*:*:* | 1 | OR | 8.8 | 8.8.125.0 |
| cpe:2.3:o:cisco:aironet_1830_firmware:*:*:*:*:*:*:*:* | 1 | OR | 8.9 | 8.9.111.0 |
| cpe:2.3:h:cisco:aironet_1830:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:cisco:aironet_1850_firmware:*:*:*:*:*:*:*:* | 1 | OR | 8.4 | 8.5.151.0 |
| cpe:2.3:o:cisco:aironet_1850_firmware:*:*:*:*:*:*:*:* | 1 | OR | 8.8 | 8.8.125.0 |
| cpe:2.3:o:cisco:aironet_1850_firmware:*:*:*:*:*:*:*:* | 1 | OR | 8.9 | 8.9.111.0 |
| cpe:2.3:h:cisco:aironet_1850:-:*:*:*:*:*:*:* | 0 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:N/I:N/A:C
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- NONE
- Availability Impact
- COMPLETE
- Base Score
- 7.8
- Severity
- HIGH
- Exploitability Score
- 10
- Impact Score
- 6.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- CHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- HIGH
- Base Score
- 8.6
- Base Severity
- HIGH
- Exploitability Score
- 3.9
- Impact Score
- 4
References
| Reference URL | Reference Tags |
|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191016-airo-pptp-dos | Vendor Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2019-15261 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-15261 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 17:01:04 | Added to TrackCVE | |||
| 2022-12-04 04:36:26 | psirt@cisco.com | ykramarz@cisco.com | CVE Assigner | updated |
| 2022-12-04 04:36:26 | 2019-10-16T19:15Z | 2019-10-16T19:15:13 | CVE Published Date | updated |
| 2022-12-04 04:36:26 | 2019-10-22T19:51:02 | CVE Modified Date | updated | |
| 2022-12-04 04:36:26 | Analyzed | Vulnerability Status | updated |