CVE-2020-3397 (CNNVD-202008-1299)
中文标题:
Cisco NX-OS Software 输入验证错误漏洞
英文标题:
Cisco NX-OS Software Border Gateway Protocol Multicast VPN Denial of Service Vulnerability
漏洞描述
中文描述:
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。TCP(Transmission Control Protocol,传输控制协议)是一种面向连接的、可靠的、基于字节流的传输层通信协议,由IETF的RFC 793定义。 Cisco NX-OS Software 存在安全漏洞,该漏洞源于特定类型的BGP MVPN更新消息的输入验证不完整,攻击者可以利用该漏洞导致受影响设备异常重载进而导致拒绝服务。
英文描述:
A vulnerability in the Border Gateway Protocol (BGP) Multicast VPN (MVPN) implementation of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause an affected device to unexpectedly reload, resulting in a denial of service (DoS) condition. The vulnerability is due to incomplete input validation of a specific type of BGP MVPN update message. An attacker could exploit this vulnerability by sending this specific, valid BGP MVPN update message to a targeted device. A successful exploit could allow the attacker to cause one of the BGP-related routing applications to restart multiple times, leading to a system-level restart. Note: The Cisco implementation of BGP accepts incoming BGP traffic from only explicitly configured peers. To exploit this vulnerability, an attacker must send a specific BGP MVPN update message over an established TCP connection that appears to come from a trusted BGP peer. To do so, the attacker must obtain information about the BGP peers in the trusted network of the affected system.
CWE类型:
标签:
受影响产品
| 厂商 | 产品 | 版本 | 版本范围 | 平台 | CPE |
|---|---|---|---|---|---|
| Cisco | Cisco NX-OS Software | n/a | - | - |
cpe:2.3:a:cisco:cisco_nx-os_software:n_a:*:*:*:*:*:*:*
|
| cisco | nx-os | - | - | - |
cpe:2.3:o:cisco:nx-os:-:*:*:*:*:*:*:*
|
解决方案
中文解决方案:
英文解决方案:
临时解决方案:
参考链接
cve.org
CVSS评分详情
3.0 (cna)
HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
时间信息
利用信息
数据源详情
| 数据源 | 记录ID | 版本 | 提取时间 |
|---|---|---|---|
| CVE | cve_CVE-2020-3397 |
2025-11-11 15:20:37 | 2025-11-11 07:36:19 |
| NVD | nvd_CVE-2020-3397 |
2025-11-11 14:57:02 | 2025-11-11 07:44:43 |
| CNNVD | cnnvd_CNNVD-202008-1299 |
2025-11-11 15:10:29 | 2025-11-11 07:56:24 |
版本与语言
安全公告
变更历史
查看详细变更
- vulnerability_type: 未提取 -> 输入验证错误
- cnnvd_id: 未提取 -> CNNVD-202008-1299
- data_sources: ['cve', 'nvd'] -> ['cnnvd', 'cve', 'nvd']
查看详细变更
- affected_products_count: 1 -> 2
- data_sources: ['cve'] -> ['cve', 'nvd']