CVE-2021-1523 (CNNVD-202108-2303)

HIGH
中文标题:
Cisco Nexus 9000 Series Fabric Switches 输入验证错误漏洞
英文标题:
Cisco Nexus 9000 Series Fabric Switches ACI Mode Queue Wedge Denial of Service Vulnerability
CVSS分数: 8.6
发布时间: 2021-08-25 19:10:10
漏洞类型: 输入验证错误
状态: PUBLISHED
数据质量分数: 0.30
数据版本: v3
漏洞描述
中文描述:

Cisco Nexus 9000 Series Fabric Switches是美国思科（Cisco）公司的一款9000系列光纤交换机。 Cisco Nexus 9000 Series Fabric Switches 中存在输入验证错误漏洞，该漏洞源于产品对特定端口的TCP流量处理不当。攻击者可通过向交换机的 Switched Virtual Interface 端口发送特质数据包引发漏洞。

英文描述:

A vulnerability in Cisco Nexus 9000 Series Fabric Switches in Application Centric Infrastructure (ACI) Mode could allow an unauthenticated, remote attacker to cause a queue wedge on a leaf switch, which could result in critical control plane traffic to the device being dropped. This could result in one or more leaf switches being removed from the fabric. This vulnerability is due to mishandling of ingress TCP traffic to a specific port. An attacker could exploit this vulnerability by sending a stream of TCP packets to a specific port on a Switched Virtual Interface (SVI) configured on the device. A successful exploit could allow the attacker to cause a specific packet queue to queue network buffers but never process them, leading to an eventual queue wedge. This could cause control plane traffic to be dropped, resulting in a denial of service (DoS) condition where the leaf switches are unavailable. Note: This vulnerability requires a manual intervention to power-cycle the device to recover.

CWE类型:
CWE-772
标签:
（暂无数据）
受影响产品
厂商 产品 版本 版本范围 平台 CPE
Cisco Cisco NX-OS System Software in ACI Mode n/a - - cpe:2.3:a:cisco:cisco_nx-os_system_software_in_aci_mode:n_a:*:*:*:*:*:*:*
cisco nx-os 13.2\(3n\) - - cpe:2.3:o:cisco:nx-os:13.2\(3n\):*:*:*:*:*:*:*
cisco nx-os 14.2\(4i\) - - cpe:2.3:o:cisco:nx-os:14.2\(4i\):*:*:*:*:*:*:*
解决方案
中文解决方案:
（暂无数据）
英文解决方案:
（暂无数据）
临时解决方案:
（暂无数据）
参考链接
20210825 Cisco Nexus 9000 Series Fabric Switches ACI Mode Queue Wedge Denial of Service Vulnerability vendor-advisory
cve.org
访问
CVSS评分详情
3.1 (cna)
HIGH
8.6
CVSS向量: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
机密性
NONE
完整性
NONE
可用性
HIGH
时间信息
发布时间:
2021-08-25 19:10:10
修改时间:
2024-11-07 22:03:29
创建时间:
2025-11-11 15:36:33
更新时间:
2025-11-11 15:56:52
利用信息
暂无可利用代码信息
数据源详情
数据源 记录ID 版本 提取时间
CVE cve_CVE-2021-1523 2025-11-11 15:20:45 2025-11-11 07:36:33
NVD nvd_CVE-2021-1523 2025-11-11 14:57:41 2025-11-11 07:44:55
CNNVD cnnvd_CNNVD-202108-2303 2025-11-11 15:10:42 2025-11-11 07:56:52
版本与语言
当前版本: v3
主要语言: EN
支持语言:
EN ZH
安全公告
暂无安全公告信息
变更历史
v3 CNNVD
2025-11-11 15:56:52
vulnerability_type: 未提取 → 输入验证错误; cnnvd_id: 未提取 → CNNVD-202108-2303; data_sources: ['cve', 'nvd'] → ['cnnvd', 'cve', 'nvd']
查看详细变更
  • vulnerability_type: 未提取 -> 输入验证错误
  • cnnvd_id: 未提取 -> CNNVD-202108-2303
  • data_sources: ['cve', 'nvd'] -> ['cnnvd', 'cve', 'nvd']
v2 NVD
2025-11-11 15:44:55
affected_products_count: 1 → 3; data_sources: ['cve'] → ['cve', 'nvd']
查看详细变更
  • affected_products_count: 1 -> 3
  • data_sources: ['cve'] -> ['cve', 'nvd']