8.6
HIGH
CVE-2021-1565
Cisco Catalyst 9000 Family Wireless Controllers CAPWAP Protocol Processing Denial of Service Vulnerabilities
Description

Multiple vulnerabilities in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol processing of Cisco IOS XE Software for Cisco Catalyst 9000 Family Wireless Controllers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. These vulnerabilities are due to insufficient validation of CAPWAP packets. An attacker could exploit the vulnerabilities by sending a malformed CAPWAP packet to an affected device. A successful exploit could allow the attacker to cause the affected device to crash and reload, resulting in a DoS condition.

INFO

Published Date :

Sept. 23, 2021, 3:15 a.m.

Last Modified :

Nov. 7, 2023, 3:28 a.m.

Remotely Exploitable :

Yes !

Impact Score :

4.0

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2021-1565 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Cisco ios_xe
2 Cisco catalyst_9800_firmware
3 Cisco embedded_wireless_controller
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-1565.

URL Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ewlc-capwap-dos-gmNjdKOY Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-1565 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-1565 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Removed CVSS V3 Cisco Systems, Inc. AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
    Added CVSS V3.1 Cisco Systems, Inc. AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
  • Initial Analysis by [email protected]

    Oct. 07, 2021

    Action Type Old Value New Value
    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
    Changed Reference Type https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ewlc-capwap-dos-gmNjdKOY No Types Assigned https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ewlc-capwap-dos-gmNjdKOY Vendor Advisory
    Added CWE NIST CWE-415
    Added CPE Configuration OR *cpe:2.3:o:cisco:ios_xe:3.15.1xbs:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:3.15.2xbs:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:17.3.1:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:17.3.2:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:17.4.1:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:17.5.1:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:a:cisco:embedded_wireless_controller:*:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:catalyst_9300-24p-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-24p-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-24s-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-24s-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-24t-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-24t-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-24u-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-24u-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-24ux-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-24ux-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-48p-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-48p-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-48s-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-48s-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-48t-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-48t-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-48u-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-48u-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-48un-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-48un-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-48uxm-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-48uxm-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l-24p-4g-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l-24p-4g-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l-24p-4x-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l-24p-4x-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l-24t-4g-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l-24t-4g-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l-24t-4x-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l-24t-4x-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l-48p-4g-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l-48p-4g-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l-48p-4x-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l-48p-4x-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l-48t-4g-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l-48t-4g-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l-48t-4x-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l-48t-4x-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l_stack:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9400:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9400_supervisor_engine-1:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9407r:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9410r:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9500:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:catalyst_9800_firmware:17.3:*:*:*:*:*:*:* *cpe:2.3:o:cisco:catalyst_9800_firmware:17.5.1:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:catalyst_9800-40:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9800-80:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9800-cl:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9800-l:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9800-l-c:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9800-l-f:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:catalyst_9800_firmware:17.3:*:*:*:*:*:*:* *cpe:2.3:o:cisco:catalyst_9800_firmware:17.5.1:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:catalyst_9800-cl:-:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-1565 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-1565 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.16 }} 0.02%

score

0.52604

percentile

CVSS31 - Vulnerability Scoring System
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