NVD

CVE-2021-1615 Detail

Description

A vulnerability in the packet processing functionality of Cisco Embedded Wireless Controller (EWC) Software for Catalyst Access Points (APs) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected AP. This vulnerability is due to insufficient buffer allocation. An attacker could exploit this vulnerability by sending crafted traffic to an affected device. A successful exploit could allow the attacker to exhaust available resources and cause a DoS condition on an affected AP, as well as a DoS condition for client traffic traversing the AP.

Severity

CVSS 3.x Severity and Metrics:

NIST: NVD

Base Score: 8.6 HIGH

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Nist CVSS score does not match with CNA score

CNA: Cisco Systems, Inc.

Base Score: 8.6 HIGH

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: It is possible that the NVD CVSS may not match that of the CNA. The most common reason for this is that publicly available information does not provide sufficient detail or that information simply was not available at the time the CVSS vector string was assigned.

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-ewc-dos-g6JruHRT	Patch Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
NVD-CWE-Other	Other	NIST
CWE-410	Insufficient Resource Pool	Cisco Systems, Inc.

Known Affected Software Configurations Switch to CPE 2.2

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Denotes Vulnerable Software
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Change History

2 change records found show changes

Initial Analysis by NIST 9/30/2021 9:06:56 AM

Action	Type	Old Value	New Value
Added	CPE Configuration		AND OR cpe:2.3:a:cisco:embedded_wireless_controller::::::::* versions up to (including) 17.6.1 OR cpe:2.3:h:cisco:catalyst_9105:-:::::::* cpe:2.3:h:cisco:catalyst_9115:-:::::::* cpe:2.3:h:cisco:catalyst_9117:-:::::::* cpe:2.3:h:cisco:catalyst_9120:-:::::::* cpe:2.3:h:cisco:catalyst_9124:-:::::::* cpe:2.3:h:cisco:catalyst_9130:-:::::::*
Added	CVSS V2		NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P)
Added	CVSS V3.1		NIST AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Added	CWE		NIST CWE-400
Changed	Reference Type	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-ewc-dos-g6JruHRT No Types Assigned	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-ewc-dos-g6JruHRT Patch, Vendor Advisory

Quick Info

CVE Dictionary Entry:
CVE-2021-1615
NVD Published Date:
09/22/2021
NVD Last Modified:
07/08/2022
Source:
Cisco Systems, Inc.

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