CVE-2020-3517— Cisco FXOS and NX-OS Software Cisco Fabric Services Denial of Service Vulnerability

Cisco FXOS and NX-OS Software Cisco Fabric Services Denial of Service Vulnerability

A vulnerability in the Cisco Fabric Services component of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated attacker to cause process crashes, which could result in a denial of service (DoS) condition on an affected device. The attack vector is configuration dependent and could be remote or adjacent. For more information about the attack vector, see the Details section of this advisory. The vulnerability is due to insufficient error handling when the affected software parses Cisco Fabric Services messages. An attacker could exploit this vulnerability by sending malicious Cisco Fabric Services messages to an affected device. A successful exploit could allow the attacker to cause a reload of an affected device, which could result in a DoS condition.

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空指针解引用

Cisco FXOS Software和Cisco NX-OS Software 代码问题漏洞

Cisco NX-OS Software和Cisco FXOS Software都是美国思科（Cisco）公司的产品。Cisco NX-OS Software是一套交换机使用的数据中心级操作系统软件。Cisco FXOS Software是一套运行在思科安全设备中的防火墙软件。 Cisco FXOS Software和Cisco NX-OS Software中的Fabric服务组件存在安全漏洞，该漏洞源于受影响的软件分析Cisco结构服务消息时错误处理不足，攻击者可以利用该漏洞导致拒绝服务攻击。

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