CVE-2022-20823— Cisco NX-OS Software 缓冲区错误漏洞

Cisco NX-OS Software OSPFv3 Denial of Service Vulnerability

A vulnerability in the OSPF version 3 (OSPFv3) feature of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to incomplete input validation of specific OSPFv3 packets. An attacker could exploit this vulnerability by sending a malicious OSPFv3 link-state advertisement (LSA) to an affected device. A successful exploit could allow the attacker to cause the OSPFv3 process to crash and restart multiple times, causing the affected device to reload and resulting in a DoS condition. Note: The OSPFv3 feature is disabled by default. To exploit this vulnerability, an attacker must be able to establish a full OSPFv3 neighbor state with an affected device. For more information about exploitation conditions, see the Details section of this advisory.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

缓冲区上溢读取

Cisco NX-OS Software 缓冲区错误漏洞

Cisco NX-OS Software是美国思科（Cisco）公司的一套交换机使用的数据中心级操作系统软件。 Cisco NX-OS Software OSPFv3存在安全漏洞，该漏洞源于其对特定OSPFv3报文的输入验证不完全允许未经验证的远程攻击者重复发送恶意的OSPFv3链路状态通告（LSA）导致OSPFv3进程崩溃和重启，使受影响的设备重新加载实现拒绝服务。

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