CVE-2020-3221— Cisco IOS XE Software Flexible NetFlow Version 9 Denial of Service Vulnerability
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I. Basic Information for CVE-2020-3221
Vulnerability Information
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Vulnerability Title
Cisco IOS XE Software Flexible NetFlow Version 9 Denial of Service Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in the Flexible NetFlow Version 9 packet processor of Cisco IOS XE Software for Cisco Catalyst 9800 Series Wireless Controllers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper validation of parameters in a Flexible NetFlow Version 9 record. An attacker could exploit this vulnerability by sending a malformed Flexible NetFlow Version 9 packet to the Control and Provisioning of Wireless Access Points (CAPWAP) data port of an affected device. An exploit could allow the attacker to trigger an infinite loop, resulting in a process crash that would cause a reload of the device.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
输入验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco Catalyst 9800 Series Wireless Controllers IOS XE 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IOS XE是美国思科（Cisco）公司的一套为其网络设备开发的操作系统。 Cisco Catalyst 9800 Series Wireless Controllers中的IOS XE的Flexible NetFlow 9版本数据包处理器存在输入验证错误漏洞。攻击者可通过将格式错误的Flexible NetFlow 9版本数据包发送到受影响设备的CAPWAP数据端口利用该漏洞造成无限循环，导致进程崩溃，进而导致设备重新加载。
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 16.10.1 | n/a | - |
II. Public POCs for CVE-2020-3221
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-fnfv9-dos-HND6Fc9uvendor-advisoryx_refsource_CISCO
- https://nvd.nist.gov/vuln/detail/CVE-2020-3221
Same Patch Batch · Cisco · 2020-06-03 · 50 CVEs total
| CVE-2020-3353 | 5.9 MEDIUM | Cisco Identity Services Engine Denial of Service Vulnerability |
| CVE-2020-3319 | 3.3 LOW | Cisco Webex Network Recording Player and Cisco Webex Player Denial of Service Vulnerabilit |
| CVE-2020-3322 | 3.3 LOW | Cisco Webex Network Recording Player and Cisco Webex Player Denial of Service Vulnerabilit |
| CVE-2020-3321 | 3.3 LOW | Cisco Webex Network Recording Player and Cisco Webex Player Denial of Service Vulnerabilit |
| CVE-2020-3333 | Cisco Application Services Engine Software Unauthenticated Event Policies Update Vulnerabi | |
| CVE-2020-3257 | Cisco IOx Application Environment for IOS Software for Cisco Industrial Routers Vulnerabil | |
| CVE-2020-3267 | Cisco Unified Contact Center Express Improper API Authorization Vulnerability | |
| CVE-2020-3258 | Cisco IOS Software for Cisco Industrial Routers Arbitrary Code Execution Vulnerabilities | |
| CVE-2020-3281 | Cisco Digital Network Architecture Center Information Disclosure Vulnerability | |
| CVE-2020-3232 | Cisco ASR 920 Series Aggregation Services Router Model 12SZ-IM SNMP Denial of Service Vuln | |
| CVE-2020-3200 | Cisco IOS and IOS XE Software Secure Shell Denial of Service Vulnerability | |
| CVE-2020-3199 | Cisco IOx Application Environment for IOS Software for Cisco Industrial Routers Vulnerabil | |
| CVE-2020-3198 | Cisco IOS Software for Cisco Industrial Routers Arbitrary Code Execution Vulnerabilities | |
| CVE-2020-3228 | Cisco IOS, IOS XE, and NX-OS Software Security Group Tag Exchange Protocol Denial of Servi | |
| CVE-2020-3231 | Cisco IOS Software for Catalyst 2960-L Series Switches and Catalyst CDB-8P Switches 802.1X | |
| CVE-2020-3230 | Cisco IOS and IOS XE Software Internet Key Exchange Version 2 Denial of Service Vulnerabil | |
| CVE-2020-3229 | Cisco IOS XE Software Web UI Privilege Escalation Vulnerability | |
| CVE-2020-3227 | Cisco IOx for IOS XE Software Privilege Escalation Vulnerability | |
| CVE-2020-3225 | Cisco IOS and IOS XE Software Common Industrial Protocol Denial of Service Vulnerabilities | |
| CVE-2020-3233 | Cisco IOx Application Framework Local Manager Stored Cross-Site Scripting Vulnerability |
Showing top 20 of 50 CVEs. View all on vendor page → →
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Same weakness: CWE-20
V. Comments for CVE-2020-3221
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