CVE-2021-34697 (CNNVD-202109-1569)
中文标题:
Cisco IOS XE Software 代码问题漏洞
英文标题:
Cisco IOS XE Software Protection Against Distributed Denial of Service Attacks Feature Vulnerability
漏洞描述
中文描述:
Cisco IOS XE Software是美国思科（Cisco）公司的一个操作系统。用于企业有线和无线访问，汇聚，核心和WAN的单一操作系统，Cisco IOS XE降低了业务和网络的复杂性。 Cisco IOS XE Software 中存在代码问题漏洞，该漏洞源于在产品的分布式拒绝服务攻击防护功能配置了半开连接限制、TCP SYN flood限制或TCP SYN cookie特性时未能正确处理流量。攻击者可通过该漏洞导致拒绝服务。以下产品及版本受到影响： Cisco IOS XE Software releases 17.3.1 以及之前版本。
英文描述:
A vulnerability in the Protection Against Distributed Denial of Service Attacks feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to conduct denial of service (DoS) attacks to or through the affected device. This vulnerability is due to incorrect programming of the half-opened connections limit, TCP SYN flood limit, or TCP SYN cookie features when the features are configured in vulnerable releases of Cisco IOS XE Software. An attacker could exploit this vulnerability by attempting to flood traffic to or through the affected device. A successful exploit could allow the attacker to initiate a DoS attack to or through an affected device.
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 IOS XE Software | n/a | - | - |
cpe:2.3:a:cisco:cisco_ios_xe_software:n_a:*:*:*:*:*:*:*
|
| cisco | ios_xe | * | - | - |
cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*
|
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
3.1 (cna)
MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
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-2021-34697 |
2025-11-11 15:21:00 | 2025-11-11 07:36:55 |
| NVD | nvd_CVE-2021-34697 |
2025-11-11 14:57:42 | 2025-11-11 07:45:13 |
| CNNVD | cnnvd_CNNVD-202109-1569 |
2025-11-11 15:10:43 | 2025-11-11 07:56:54 |
版本与语言
安全公告
变更历史
查看详细变更
- vulnerability_type: 未提取 -> 代码问题
- cnnvd_id: 未提取 -> CNNVD-202109-1569
- data_sources: ['cve', 'nvd'] -> ['cnnvd', 'cve', 'nvd']
查看详细变更
- affected_products_count: 1 -> 2
- data_sources: ['cve'] -> ['cve', 'nvd']