CVE-2020-3492 (CNNVD-202009-1400)
中文标题:
Cisco IOS XE 输入验证错误漏洞
英文标题:
Cisco IOS XE Software for Catalyst 9800 Series and Cisco AireOS Software for Cisco WLC Flexible NetFlow Version 9 Denial of Service Vulnerability
漏洞描述
中文描述:
Cisco IOS等都是美国思科(Cisco)公司的产品。Cisco IOS是一套为其网络设备开发的操作系统。IOS XE是一套为其网络设备开发的操作系统。CLI是其中的一个命令行界面。Cisco Wireless LAN Controller是一款无线局域网控制器产品。该产品在无线局域网中提供安全策略、入侵检测等功能。 Cisco IOS XE Cisco Catalyst 9800 Flexible NetFlow 9版本存在安全漏洞,该漏洞源于一个灵活的NetFlow版本9记录中某些参数的验证不足。攻击者可利用该漏洞造成拒绝服务(DoS)。
英文描述:
A vulnerability in the Flexible NetFlow Version 9 packet processor of Cisco IOS XE Software for Cisco Catalyst 9800 Series Wireless Controllers and Cisco AireOS Software for Cisco Wireless LAN Controllers (WLC) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient validation of certain parameters in a Flexible NetFlow Version 9 record. An attacker could exploit this vulnerability by spoofing the address of an existing Access Point on the network and sending a Control and Provisioning of Wireless Access Points (CAPWAP) packet that includes a crafted Flexible NetFlow Version 9 record to an affected device. A successful exploit could allow the attacker to cause a process crash that would lead to a reload of the device.
CWE类型:
标签:
受影响产品
| 厂商 | 产品 | 版本 | 版本范围 | 平台 | CPE |
|---|---|---|---|---|---|
| Cisco | Cisco Wireless LAN Controller (WLC) | n/a | - | - |
cpe:2.3:a:cisco:cisco_wireless_lan_controller_(wlc):n_a:*:*:*:*:*:*:*
|
| cisco | ios_xe | 16.12.1 | - | - |
cpe:2.3:o:cisco:ios_xe:16.12.1:*:*:*:*:*:*:*
|
解决方案
中文解决方案:
英文解决方案:
临时解决方案:
参考链接
cve.org
CVSS评分详情
3.0 (cna)
HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
时间信息
利用信息
数据源详情
| 数据源 | 记录ID | 版本 | 提取时间 |
|---|---|---|---|
| CVE | cve_CVE-2020-3492 |
2025-11-11 15:20:37 | 2025-11-11 07:36:19 |
| NVD | nvd_CVE-2020-3492 |
2025-11-11 14:57:03 | 2025-11-11 07:44:43 |
| CNNVD | cnnvd_CNNVD-202009-1400 |
2025-11-11 15:10:30 | 2025-11-11 07:56:26 |
版本与语言
安全公告
变更历史
查看详细变更
- vulnerability_type: 未提取 -> 输入验证错误
- cnnvd_id: 未提取 -> CNNVD-202009-1400
- data_sources: ['cve', 'nvd'] -> ['cnnvd', 'cve', 'nvd']
查看详细变更
- affected_products_count: 1 -> 2
- data_sources: ['cve'] -> ['cve', 'nvd']