Vulnerability Information
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Vulnerability Title
Multiple Cisco Operating Systems Unidirectional Link Detection Denial of Service Vulnerability
Vulnerability Description
A vulnerability in the Unidirectional Link Detection (UDLD) feature of Cisco FXOS Software, Cisco IOS Software, Cisco IOS XE Software, Cisco IOS XR Software, and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause an affected device to reload. This vulnerability is due to improper input validation of the UDLD packets. An attacker could exploit this vulnerability by sending specifically crafted UDLD packets to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition. Note: The UDLD feature is disabled by default, and the conditions to exploit this vulnerability are strict. An attacker must have full control of a directly connected device. On Cisco IOS XR devices, the impact is limited to the reload of the UDLD process.
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Vulnerability Type
输入验证不恰当
Vulnerability Title
多款Cisco产品输入验证错误漏洞
Vulnerability Description
Cisco NX-OS Software等都是美国思科（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 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。 Cisco FXOS 软件、Cisco IOS 软件、Cisco IOS XE 软件、Cisco IOS XR 软件和 Cisco NX-OS 软件存在输入验证错误漏洞，该漏洞源于软件的单向链路检测(UDLD)功能对UDLD报文的输入验证不正确。漏
CVSS Information
N/A
Vulnerability Type
N/A