Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2022-20856— Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family CAPWAP Mobility Denial of Service Vulnerability

Quick assessment

Affected
Cisco Cisco IOS XE Software
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cisco IOS XE Wireless Controller software是美国思科（Cisco）公司的一个无线局域网控制器。提供一个管理网络功能 Cisco IOS XE Wireless Controller Software Catalyst 9000存在安全漏洞，该漏洞源于在处理CAPWAP Mobility消息相关时出现逻辑错误和资源管理不当问题。

CVSS 8.6 · High EPSS 1.28% · P69
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2022-20856

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family CAPWAP Mobility Denial of Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the processing of Control and Provisioning of Wireless Access Points (CAPWAP) Mobility messages in 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 a logic error and improper management of resources related to the handling of CAPWAP Mobility messages. An attacker could exploit this vulnerability by sending crafted CAPWAP Mobility packets to an affected device. A successful exploit could allow the attacker to exhaust resources on the affected device. This would cause the device to reload, resulting in a DoS condition.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在生命周期中对资源的控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco IOS XE Wireless Controller software 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IOS XE Wireless Controller software是美国思科（Cisco）公司的一个无线局域网控制器。提供一个管理网络功能 Cisco IOS XE Wireless Controller Software Catalyst 9000存在安全漏洞，该漏洞源于在处理CAPWAP Mobility消息相关时出现逻辑错误和资源管理不当问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Cisco Cisco IOS XE Software n/a -

II. Public POCs for CVE-2022-20856

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2022-20856

请登录查看更多情报信息。

Vendor Advisories for CVE-2022-20856 (1)

Same Patch Batch · Cisco · 2022-09-30 · 16 CVEs total

CVE-2022-20919 8.6 HIGH Cisco IOS and IOS XE Software Common Industrial Protocol Request Denial of Service Vulnera
CVE-2022-20848 8.6 HIGH Cisco IOS XE Software for Embedded Wireless Controllers on Catalyst 9100 Series Access Poi
CVE-2022-20847 8.6 HIGH Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family DHCP Processing Den
CVE-2022-20855 7.9 HIGH Cisco IOS XE Software for Embedded Wireless Controllers on Catalyst Access Points Privileg
CVE-2022-20818 7.8 HIGH Cisco SD-WAN Software Privilege Escalation Vulnerabilities
CVE-2022-20775 7.8 HIGH Cisco SD-WAN Software Privilege Escalation Vulnerability
CVE-2022-20945 7.4 HIGH Cisco Catalyst 9100 Series Access Points Association Request Denial of Service Vulnerabili
CVE-2022-20769 7.4 HIGH Cisco Wireless LAN Controller AireOS Software FIPS Mode Denial of Service Vulnerability
CVE-2022-20930 6.7 MEDIUM Cisco SD-WAN Software Arbitrary File Corruption Vulnerability
CVE-2022-20810 6.5 MEDIUM Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family SNMP Information Di
CVE-2022-20662 6.1 MEDIUM Cisco Duo for macOS Authentication Bypass Vulnerability
CVE-2022-20851 5.5 MEDIUM Cisco IOS XE Software Web UI Command Injection Vulnerability
CVE-2022-20850 5.5 MEDIUM Cisco SD-WAN Arbitrary File Deletion Vulnerability
CVE-2022-20844 5.3 MEDIUM Cisco Software-Defined Application Visibility and Control on Cisco vManage Static Username
CVE-2022-20728 4.7 MEDIUM Cisco Access Points VLAN Bypass from Native VLAN Vulnerability

IV. Related Vulnerabilities

Same product: Cisco IOS XE Software
Same vendor: Cisco
Same weakness: CWE-664

V. Comments for CVE-2022-20856

No comments yet

Leave a comment