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CVE-2022-20682— Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family CAPWAP 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 存在代码问题漏洞，该漏洞源于攻击者可以通过 CAPWAP 导致 Cisco IOS XE 的致命错误，以触发拒绝服务。

CVSS 8.6 · High EPSS 1.32% · P68

Possible ATT&CK Techniques 1 AI

T1498.001 · Direct Network Flood
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I. Basic Information for CVE-2022-20682

Vulnerability Information
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Vulnerability Title
Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family CAPWAP Denial of Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
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.
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
未检查返回值导致空指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco IOS XE Wireless Controller software 代码问题漏洞
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 存在代码问题漏洞，该漏洞源于攻击者可以通过 CAPWAP 导致 Cisco IOS XE 的致命错误，以触发拒绝服务。
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-2022-20682

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III. Intelligence Information for CVE-2022-20682

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Vendor Advisories for CVE-2022-20682 (1)

Same Patch Batch · Cisco · 2022-04-15 · 34 CVEs total

CVE-2022-20695 10.0 CRITICAL Cisco Wireless LAN Controller Management Interface Authentication Bypass Vulnerability
CVE-2022-20622 8.6 HIGH Cisco Embedded Wireless Controller with Catalyst Access Points IP Flood Denial of Service
CVE-2022-20678 8.6 HIGH Cisco IOS XE Software AppNav-XE Denial of Service Vulnerability
CVE-2022-20714 8.6 HIGH Cisco IOS XR Software for ASR 9000 Series Routers Lightspeed-Plus Line Cards Denial of Ser
CVE-2022-20697 8.6 HIGH Cisco IOS and IOS XE Software Web Services Denial of Service Vulnerability
CVE-2022-20683 8.6 HIGH Cisco IOS XE Software for Catalyst 9800 Series Wireless Controllers Application Visibility
CVE-2022-20716 7.8 HIGH Cisco SD-WAN Solution Improper Access Control Vulnerability
CVE-2022-20681 7.8 HIGH Cisco IOS XE Software for Cisco Catalyst 9000 Family Switches and Catalyst 9000 Family Wir
CVE-2022-20692 7.7 HIGH Cisco IOS XE Software NETCONF Over SSH Denial of Service Vulnerability
CVE-2022-20684 7.4 HIGH Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family SNMP Trap Denial of
CVE-2022-20761 7.4 HIGH Cisco 1000 Series Connected Grid Router Integrated Wireless Access Point Denial of Service
CVE-2022-20739 7.3 HIGH Cisco SD-WAN vManage Software Privilege Escalation Vulnerability
CVE-2022-20694 6.8 MEDIUM Cisco IOS XE Software Border Gateway Protocol Resource Public Key Infrastructure Denial of
CVE-2022-20679 6.8 MEDIUM Cisco IOS XE Software IPSec Denial of Service Vulnerability
CVE-2022-20758 6.8 MEDIUM Cisco IOS XR Software Border Gateway Protocol Ethernet VPN Denial of Service Vulnerability
CVE-2022-20735 6.5 MEDIUM Cisco SD-WAN vManage Software Cross-Site Request Forgery Vulnerability
CVE-2022-20747 6.5 MEDIUM Cisco SD-WAN vManage Software Information Disclosure Vulnerability
CVE-2022-20726 5.5 MEDIUM Cisco IOx Application Hosting Environment Vulnerabilities
CVE-2022-20718 5.5 MEDIUM Cisco IOx Application Hosting Environment Vulnerabilities
CVE-2022-20725 5.5 MEDIUM Cisco IOx Application Hosting Environment Vulnerabilities

Showing top 20 of 34 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Cisco IOS XE Software
Same vendor: Cisco
Same weakness: CWE-690

V. Comments for CVE-2022-20682

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