Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family SNMP Trap Denial of Service Vulnerability

A vulnerability in Simple Network Management Protocol (SNMP) trap generation for wireless clients of the Cisco IOS XE Wireless Controller Software for the Cisco Catalyst 9000 Family could allow an unauthenticated, adjacent attacker to cause the device to unexpectedly reload, causing a denial of service (DoS) condition on an affected device. The vulnerability is due to the lack of input validation of the information used to generate an SNMP trap in relation to a wireless client connection. An attacker could exploit this vulnerability by sending an 802.1x packet with crafted parameters during the wireless authentication setup phase of a connection. A successful exploit could allow the attacker to cause the device to reload, causing a DoS condition.

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输入验证不恰当

Cisco IOS和IOS XE 输入验证错误漏洞

Cisco IOS和IOS XE都是美国思科（Cisco）公司的一套为其网络设备开发的操作系统。 Cisco IOS XE Wireless Controller和Cisco Catalyst 9000存在安全漏洞，该漏洞源于缺乏用于生成与无线客户端连接有关的SNMP陷阱的信息的输入验证所致。 攻击者可利用该漏洞在连接的无线身份验证设置阶段通过发送包含特制参数的802.1x数据包。

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