CVE-2019-15261

Published Oct 16, 2019

Last updated 5 years ago

CVSS high 8.6

Overview

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: ykramarz@cisco.com
NVD status: Analyzed

Risk scores

CVSS 3.1

Type: Primary
Base score: 8.6
Impact score: 4
Exploitability score: 3.9
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Severity: HIGH

CVSS 3.0

Type: Secondary
Base score: 8.6
Impact score: 4
Exploitability score: 3.9
Vector string: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Severity: HIGH

CVSS 2.0

Type: Primary
Base score: 7.8
Impact score: 6.9
Exploitability score: 10
Vector string: AV:N/AC:L/Au:N/C:N/I:N/A:C

Weaknesses

nvd@nist.gov: CWE-20
ykramarz@cisco.com: CWE-20

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:h:cisco:aironet_1810:-:*:*:*:*:*:*:*",
            "vulnerable": false,
            "matchCriteriaId": "36F923CF-D4EB-48F8-821D-8BB3A69ABB62"
          }
        ],
        "operator": "OR"
      },
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:o:cisco:aironet_1810_firmware:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "A0EB1E05-D03C-419E-A0D7-5C8CC944D38B",
            "versionEndExcluding": "8.5.151.0",
            "versionStartIncluding": "8.4"
          },
          {
            "criteria": "cpe:2.3:o:cisco:aironet_1810_firmware:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "1F8A1D80-EF83-42FD-BB13-243EA2049EE4",
            "versionEndExcluding": "8.8.125.0",
            "versionStartIncluding": "8.8"
          },
          {
            "criteria": "cpe:2.3:o:cisco:aironet_1810_firmware:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "1081F9D9-1B44-47FB-A0D5-3398D2979D50",
            "versionEndExcluding": "8.9.111.0",
            "versionStartIncluding": "8.9"
          }
        ],
        "operator": "OR"
      }
    ],
    "operator": "AND"
  },
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:h:cisco:aironet_1830:-:*:*:*:*:*:*:*",
            "vulnerable": false,
            "matchCriteriaId": "093AB3A8-853B-4094-BFB5-6A8775AAA8D3"
          }
        ],
        "operator": "OR"
      },
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:o:cisco:aironet_1830_firmware:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "8D6EA9B7-CB0F-4E9E-A31C-F8F88CB429D9",
            "versionEndExcluding": "8.5.151.0",
            "versionStartIncluding": "8.4"
          },
          {
            "criteria": "cpe:2.3:o:cisco:aironet_1830_firmware:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "3042B1FA-368C-4340-B058-FF57C225E09A",
            "versionEndExcluding": "8.8.125.0",
            "versionStartIncluding": "8.8"
          },
          {
            "criteria": "cpe:2.3:o:cisco:aironet_1830_firmware:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "786B186D-FD13-48A4-AB4E-1BE480465F3C",
            "versionEndExcluding": "8.9.111.0",
            "versionStartIncluding": "8.9"
          }
        ],
        "operator": "OR"
      }
    ],
    "operator": "AND"
  },
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:h:cisco:aironet_1850:-:*:*:*:*:*:*:*",
            "vulnerable": false,
            "matchCriteriaId": "BE0B76A8-377E-4176-8F04-B0D468D4E767"
          }
        ],
        "operator": "OR"
      },
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:o:cisco:aironet_1850_firmware:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "DB295008-4127-477D-B3FD-279F0C168AFC",
            "versionEndExcluding": "8.5.151.0",
            "versionStartIncluding": "8.4"
          },
          {
            "criteria": "cpe:2.3:o:cisco:aironet_1850_firmware:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "DD7F885D-F60A-4DA9-8023-7A3F3A3F509B",
            "versionEndExcluding": "8.8.125.0",
            "versionStartIncluding": "8.8"
          },
          {
            "criteria": "cpe:2.3:o:cisco:aironet_1850_firmware:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "155A2052-5460-4ED9-BE28-51453906BE32",
            "versionEndExcluding": "8.9.111.0",
            "versionStartIncluding": "8.9"
          }
        ],
        "operator": "OR"
      }
    ],
    "operator": "AND"
  }
]

Overview

Risk scores

CVSS 3.1

CVSS 3.0

CVSS 2.0

Weaknesses

Social media

Configurations

References