SB2021092407 - Multiple vulnerabilities in Cisco IOS XE Software for Catalyst 9000 Family Wireless Controllers

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Main Vulnerability Database SB2021092407

SB2021092407 - Multiple vulnerabilities in Cisco IOS XE Software for Catalyst 9000 Family Wireless Controllers

Published: September 24, 2021

Security Bulletin ID SB2021092407
Severity
Medium
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 secuirty vulnerabilities.


1) Double Free (CVE-ID: CVE-2021-1565)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol. A remote attacker can pass specially crafted data to the application, trigger double free error and cause a denial of service condition on the target system.



2) NULL pointer dereference (CVE-ID: CVE-2021-34768)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.



3) NULL pointer dereference (CVE-ID: CVE-2021-34769)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.



Remediation

Install update from vendor's website.

References