CVE-2019-1826 : A vulnerability in the quality of service (QoS) feature of Cisco Aironet Series

A vulnerability in the quality of service (QoS) feature of Cisco Aironet Series Access Points (APs) could allow an authenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper input validation on QoS fields within Wi-Fi frames by the affected device. An attacker could exploit this vulnerability by sending malformed Wi-Fi frames to an affected device. A successful exploit could allow the attacker to cause the affected device to crash, resulting in a DoS condition.

Published 2019-04-18 02:29:05

Updated 2019-10-09 23:48:16

Source Cisco Systems, Inc.

View at NVD, CVE.org

Vulnerability category: Input validationDenial of service

Products affected by CVE-2019-1826

Cisco » Aironet Access Point Firmware » Version: N/A
cpe:2.3:o:cisco:aironet_access_point_firmware:-:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Aironet 1562d » Version: N/A
When used together with: Cisco » Aironet 1562e » Version: N/A
When used together with: Cisco » Aironet 1562i » Version: N/A
When used together with: Cisco » Aironet 2800e » Version: N/A
When used together with: Cisco » Aironet 2800i » Version: N/A
When used together with: Cisco » Aironet 3800e » Version: N/A
When used together with: Cisco » Aironet 3800i » Version: N/A
When used together with: Cisco » Aironet 3800p » Version: N/A
When used together with: Cisco » Aironet 4800 » Version: N/A
Cisco » Aironet Access Point Firmware » Version: 8.5(131.3)
cpe:2.3:o:cisco:aironet_access_point_firmware:8.5\(131.3\):*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Aironet 1850e » Version: N/A
When used together with: Cisco » Aironet 1850i » Version: N/A

Exploit prediction scoring system (EPSS) score for CVE-2019-1826

EPSS FAQ

0.14%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 31 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2019-1826

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.5	MEDIUM	AV:A/AC:L/Au:S/C:N/I:N/A:C	5.1	6.9	NIST
Access Vector: Adjacent Network Access Complexity: Low Authentication: Single Confidentiality Impact: None Integrity Impact: None Availability Impact: Complete
5.7	MEDIUM	CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	2.1	3.6	NIST
Attack Vector: Adjacent Network Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High
6.8	MEDIUM	CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H	2.3	4.0	Cisco Systems, Inc.
Attack Vector: Adjacent Network Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Changed Confidentiality: None Integrity: None Availability: High

CWE ids for CVE-2019-1826

CWE-20 Improper Input Validation

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)

References for CVE-2019-1826

http://www.securityfocus.com/bid/107988

Cisco Aironet Access Points CVE-2019-1826 Denial of Service Vulnerability
Third Party Advisory;VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190417-aap-dos

Cisco Aironet Series Access Points Quality of Service Denial of Service Vulnerability
Vendor Advisory

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Vulnerability Details : CVE-2019-1826

Products affected by CVE-2019-1826

Exploit prediction scoring system (EPSS) score for CVE-2019-1826

CVSS scores for CVE-2019-1826

CWE ids for CVE-2019-1826

References for CVE-2019-1826