Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2019-1834

Severity CVSS v4.0:
Pending analysis
Type:
CWE-20 Input Validation
Publication date:
18/04/2019
Last modified:
09/10/2019

Description

A vulnerability in the internal packet processing of Cisco Aironet Series Access Points (APs) could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected AP if the switch interface where the AP is connected has port security configured. The vulnerability exists because the AP forwards some malformed wireless client packets outside of the Control and Provisioning of Wireless Access Points (CAPWAP) tunnel. An attacker could exploit this vulnerability by sending crafted wireless packets to an affected AP. A successful exploit could allow the attacker to trigger a security violation on the adjacent switch port, which could result in a DoS condition. Note: Though the Common Vulnerability Scoring System (CVSS) score corresponds to a High Security Impact Rating (SIR), this vulnerability is considered Medium because a workaround is available and exploitation requires a specific switch configuration. There are workarounds that address this vulnerability.

Impact

Vector 3.x
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 6.50 MEDIUM
Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
6.50
Severity 3.x
MEDIUM
Vector 2.0
AV:A/AC:L/Au:N/C:N/I:N/A:P CVSS v2.0 Severity and Metrics:

Base Score: 3.30 LOW
Vector: AV:A/AC:L/Au:N/C:N/I:N/A:P

Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Physical

Base Score 2.0
3.30
Severity 2.0
LOW

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:cisco:aironet_access_point_firmware:*:*:*:*:*:*:*:* 8.5 (including) 8.5.140.0 (excluding)
cpe:2.3:o:cisco:aironet_access_point_firmware:*:*:*:*:*:*:*:* 8.6.101.0 (including) 8.8.111.0 (excluding)
cpe:2.3:o:cisco:aironet_access_point_firmware:*:*:*:*:*:*:*:* 8.8.120.0 (including) 8.9.100.0 (excluding)
cpe:2.3:h:cisco:aironet_1542d:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_1542i:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_1562d:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_1562e:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_1562i:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_1800i:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_2800e:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_2800i:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_3800e:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_3800i:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_3800p:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:aironet_access_point_firmware:8.5\(131.0\):*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools