Cisco IOS and IOS XE Software Secure Shell Denial of Service Vulnerability

A vulnerability in the Secure Shell (SSH) server code of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, remote attacker to cause an affected device to reload. The vulnerability is due to an internal state not being represented correctly in the SSH state machine, which leads to an unexpected behavior. An attacker could exploit this vulnerability by creating an SSH connection to an affected device and using a specific traffic pattern that causes an error condition within that connection. A successful exploit could allow an attacker to cause the device to reload, resulting in a denial of service (DoS) condition.

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状态问题

Cisco IOS和IOS XE 安全漏洞

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 Software和Cisco IOS XE Software中的Secure Shell（SSH）服务器代码存在安全漏洞，该漏洞源于SSH状态机未正确表示内部状态。攻击者可通过建立与受影响设备的SSH连接利用该漏洞导致拒绝服务。

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