CVE-2022-20837 (CNNVD-202209-2874)
中文标题:
Cisco IOS XE Software 代码问题漏洞
英文标题:
Cisco IOS XE Software DNS NAT Protocol Application Layer Gateway Denial of Service 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存在代码问题漏洞，该漏洞源于在检查某些TCP DNS数据包时发生逻辑错误。
英文描述:
A vulnerability in the DNS application layer gateway (ALG) functionality that is used by Network Address Translation (NAT) in Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. This vulnerability is due to a logic error that occurs when an affected device inspects certain TCP DNS packets. An attacker could exploit this vulnerability by sending crafted DNS packets through the affected device that is performing NAT for DNS packets. A successful exploit could allow the attacker to cause the device to reload, resulting in a denial of service (DoS) condition on the affected device. Note: This vulnerability can be exploited only by sending IPv4 TCP packets through an affected device. This vulnerability cannot be exploited by sending IPv6 traffic.
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)
HIGHCVSS:3.1/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-2022-20837 |
2025-11-11 15:21:15 | 2025-11-11 07:37:15 |
| NVD | nvd_CVE-2022-20837 |
2025-11-11 14:58:26 | 2025-11-11 07:45:32 |
| CNNVD | cnnvd_CNNVD-202209-2874 |
2025-11-11 15:11:01 | 2025-11-11 07:57:33 |
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-202209-2874
- data_sources: ['cve', 'nvd'] -> ['cnnvd', 'cve', 'nvd']
查看详细变更
- affected_products_count: 1 -> 2
- data_sources: ['cve'] -> ['cve', 'nvd']