QID 317237

Date Published: 2022-10-18

QID 317237: Cisco Internetwork Operating System (IOS) XE Software for Embedded Wireless Controllers on Catalyst 9100 Series Access Points UDP Processing Denial of Service (DoS) Vulnerability (cisco-sa-wlc-udp-dos-XDyEwhNz)

A vulnerability in the UDP processing functionality of Cisco IOS XE Software for Embedded Wireless Controllers on Catalyst 9100 Series Access Points could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition.

Affected Products
This vulnerability affects Cisco Catalyst 9100 Series Access Points if they are running a vulnerable release of Cisco IOS XE Software and they have High Availability mode enabled. Note: High Availability mode is enabled by default and is automatically configured in environments with two or more connected 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 device to reload, resulting in a DoS condition.

  • CVSS V3 rated as High - 7.5 severity.
  • CVSS V2 rated as High - 7.8 severity.
    • Solution

    Customers are advised to refer to cisco-sa-wlc-udp-dos-XDyEwhNz for more information.

    Vendor References

    CVEs related to QID 317237

    CVE-2022-20848 |
    Software Advisories
    Advisory ID Software Component Link
    cisco-sa-wlc-udp-dos-XDyEwhNz URL Logo tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wlc-udp-dos-XDyEwhNz
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