8.6

CVE-2022-20682

Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family CAPWAP Denial of Service Vulnerability

A vulnerability in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol processing of Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to inadequate input validation of incoming CAPWAP packets encapsulating multicast DNS (mDNS) queries. An attacker could exploit this vulnerability by connecting to a wireless network and sending a crafted mDNS query, which would flow through and be processed by the wireless controller. A successful exploit could allow the attacker to cause the affected device to crash and reload, resulting in a DoS condition.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Cisco ≫ Ios Xe Version 3.15.1xbs
Cisco ≫ Ios Xe Version 3.15.2xbs
Cisco ≫ Ios Xe Version 16.11.1
Cisco ≫ Ios Xe Version 16.11.1a
Cisco ≫ Ios Xe Version 16.11.1b
Cisco ≫ Ios Xe Version 16.11.1c
Cisco ≫ Ios Xe Version 16.11.1s
Cisco ≫ Ios Xe Version 16.11.2
Cisco ≫ Ios Xe Version 16.12.1
Cisco ≫ Ios Xe Version 16.12.1a
Cisco ≫ Ios Xe Version 16.12.1c
Cisco ≫ Ios Xe Version 16.12.1s
Cisco ≫ Ios Xe Version 16.12.1t
Cisco ≫ Ios Xe Version 16.12.1w
Cisco ≫ Ios Xe Version 16.12.1x
Cisco ≫ Ios Xe Version 16.12.1y
Cisco ≫ Ios Xe Version 16.12.1z
Cisco ≫ Ios Xe Version 16.12.1z1
Cisco ≫ Ios Xe Version 16.12.1z2
Cisco ≫ Ios Xe Version 16.12.2
Cisco ≫ Ios Xe Version 16.12.2a
Cisco ≫ Ios Xe Version 16.12.2s
Cisco ≫ Ios Xe Version 16.12.2t
Cisco ≫ Ios Xe Version 16.12.3
Cisco ≫ Ios Xe Version 16.12.3a
Cisco ≫ Ios Xe Version 16.12.3s
Cisco ≫ Ios Xe Version 16.12.4
Cisco ≫ Ios Xe Version 16.12.4a
Cisco ≫ Ios Xe Version 16.12.5
Cisco ≫ Ios Xe Version 16.12.5a
Cisco ≫ Ios Xe Version 16.12.5b
Cisco ≫ Ios Xe Version 16.12.6
Cisco ≫ Ios Xe Version 16.12.6a
Cisco ≫ Ios Xe Version 17.1.1
Cisco ≫ Ios Xe Version 17.1.1a
Cisco ≫ Ios Xe Version 17.1.1s
Cisco ≫ Ios Xe Version 17.1.1t
Cisco ≫ Ios Xe Version 17.1.2
Cisco ≫ Ios Xe Version 17.1.3
Cisco ≫ Ios Xe Version 17.2.1
Cisco ≫ Ios Xe Version 17.2.1a
Cisco ≫ Ios Xe Version 17.2.1r
Cisco ≫ Ios Xe Version 17.2.1v
Cisco ≫ Ios Xe Version 17.2.2
Cisco ≫ Ios Xe Version 17.2.3
Cisco ≫ Ios Xe Version 17.3.1
Cisco ≫ Ios Xe Version 17.3.1a
Cisco ≫ Ios Xe Version 17.3.1w
Cisco ≫ Ios Xe Version 17.3.1x
Cisco ≫ Ios Xe Version 17.3.1z
Cisco ≫ Ios Xe Version 17.3.2
Cisco ≫ Ios Xe Version 17.3.2a
Cisco ≫ Ios Xe Version 17.3.3
Cisco ≫ Ios Xe Version 17.3.3a
Cisco ≫ Ios Xe Version 17.4.1
Cisco ≫ Ios Xe Version 17.4.1a
Cisco ≫ Ios Xe Version 17.4.1b
Cisco ≫ Ios Xe Version 17.4.1c
Cisco ≫ Ios Xe Version 17.4.2
Cisco ≫ Ios Xe Version 17.4.2a
Cisco ≫ Ios Xe Version 17.5.1
Cisco ≫ Ios Xe Version 17.5.1a
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 1.33% 0.684
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 8.6 3.9 4
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
NIST 7.8 10 6.9
AV:N/AC:L/Au:N/C:N/I:N/A:C
Cisco PSIRT 8.6 3.9 4
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

CWE-690 Unchecked Return Value to NULL Pointer Dereference

The product does not check for an error after calling a function that can return with a NULL pointer if the function fails, which leads to a resultant NULL pointer dereference.

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-c9800-capwap-mdns-6PSn7gKU
Vendor Advisory