QID 317049

Date Published: 2021-09-23

QID 317049: Cisco Internetwork Operating System (IOS) XE Software for Catalyst 9000 Family Wireless Controllers CAPWAP Denial of Service (DoS) Vulnerability (cisco-sa-ewlc-capwap-dos-gmNjdKOY)

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.

Affected Products
These vulnerabilities affect the following Cisco products if they are running a vulnerable release of Cisco IOS XE Software for Cisco Catalyst 9000 Family Wireless Controllers:
Catalyst 9800 Embedded Wireless Controller for Catalyst 9300, 9400, and 9500 Series Switches
Catalyst 9800 Series Wireless Controllers
Embedded Wireless Controller on Catalyst Access Points

QID Detection Logic (Authenticated):
The check matches Cisco IOS XE version retrieved via Unix Auth using "show version" command.
QID Detection Logic (Unauthenticated):
The check matches Cisco IOS XE version retrieved via SNMP or TCP/IP Fingerprint or NTP or Telnet.

A successful exploit could allow the attacker to cause the affected device to crash and reload, resulting in a DoS condition.

  • CVSS V3 rated as High - 6.3 severity.
  • CVSS V2 rated as High - 7.5 severity.
    • Solution

    Customers are advised to refer to cisco-sa-ewlc-capwap-dos-gmNjdKOY for more information.

    Vendor References

    CVEs related to QID 317049

    CVE-2021-1565 | CVE-2021-34768 | CVE-2021-34769 |
    Software Advisories
    Advisory ID Software Component Link
    cisco-sa-ewlc-capwap-dos-gmNjdKOY URL Logo tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ewlc-capwap-dos-gmNjdKOY
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