National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2019-1834 Detail

Current 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.

Source:  MITRE
Description Last Modified:  04/17/2019
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 6.5 MEDIUM
Vector: AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H (V3 legend)
Impact Score: 3.6
Exploitability Score: 2.8


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

CVSS v2.0 Severity and Metrics:

Base Score: 3.3 LOW
Vector: (AV:A/AC:L/Au:N/C:N/I:N/A:P) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 6.5


Access Vector (AV): Local_Network
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Partial
Additional Information:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.securityfocus.com/bid/108000 Third Party Advisory VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190417-air-ap-dos Vendor Advisory

Technical Details

Vulnerability Type (View All)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:o:cisco:aironet_access_point_firmware:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
8.5
Up to (excluding)
8.5.140.0
 cpe:2.3:o:cisco:aironet_access_point_firmware:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
8.6.101.0
Up to (excluding)
8.8.111.0
 cpe:2.3:o:cisco:aironet_access_point_firmware:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
8.8.120.0
Up to (excluding)
8.9.100.0
Running on/with
 cpe:2.3:h:cisco:aironet_1542d:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:aironet_1542i:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:aironet_1562d:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:aironet_1562e:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:aironet_1562i:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:aironet_1800i:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:aironet_2800e:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:aironet_2800i:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:aironet_3800e:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:aironet_3800i:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:aironet_3800p:-:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 2 ( hide )
 cpe:2.3:o:cisco:aironet_access_point_firmware:8.5\(131.0\):*:*:*:*:*:*:*
     Show Matching CPE(s)
Running on/with
 cpe:2.3:h:cisco:aironet_1850e:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:aironet_1850i:-:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

2 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-1834
NVD Published Date:
04/17/2019
NVD Last Modified:
04/19/2019