8.6
CVE-2022-20682
- EPSS 0.96%
- Published 15.04.2022 15:15:12
- Last modified 21.11.2024 06:43:18
- Source psirt@cisco.com
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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.
Data is provided by the National Vulnerability Database (NVD)
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
| Type | Source | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 0.96% | 0.757 |
| Source | Base Score | Exploit Score | Impact Score | Vector string |
|---|---|---|---|---|
| nvd@nist.gov | 8.6 | 3.9 | 4 |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
|
| nvd@nist.gov | 7.8 | 10 | 6.9 |
AV:N/AC:L/Au:N/C:N/I:N/A:C
|
| psirt@cisco.com | 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.