CVE-2022-20758 (CNNVD-202204-3304)

MEDIUM
中文标题:
Cisco IOS XR资源管理错误漏洞
英文标题:
Cisco IOS XR Software Border Gateway Protocol Ethernet VPN Denial of Service Vulnerability
CVSS分数: 6.8
发布时间: 2022-04-15 14:20:20
漏洞类型: 资源管理错误
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 IOS XR是美国思科（Cisco）公司的一套为其网络设备开发的操作系统。 Cisco IOS XR存在资源管理错误漏洞，该漏洞源于BGP Ethernet VPN导致Cisco IOS XR致命错误，从而触发拒绝服务。

英文描述:

A vulnerability in the implementation of the Border Gateway Protocol (BGP) Ethernet VPN (EVPN) functionality in Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. This vulnerability is due to the incorrect processing of a BGP update message that contains specific EVPN attributes. An attacker could exploit this vulnerability by sending a BGP update message that contains specific EVPN attributes. To exploit this vulnerability, an attacker must control a BGP speaker that has an established trusted peer connection to an affected device that is configured with the address family L2VPN EVPN to receive and process the update message. This vulnerability cannot be exploited by any data that is initiated by clients on the Layer 2 network or by peers that are not configured to accept the L2VPN EVPN address family. A successful exploit could allow the attacker to cause the BGP process to restart unexpectedly, resulting in a DoS condition. The Cisco implementation of BGP accepts incoming BGP updates only from explicitly defined peers. For this vulnerability to be exploited, the malicious BGP update message must either come from a configured, valid BGP peer or be injected by the attacker into the affected BGP network on an existing, valid TCP connection to a BGP peer.

CWE类型:
CWE-399
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 IOS XR Software n/a - - cpe:2.3:a:cisco:cisco_ios_xr_software:n_a:*:*:*:*:*:*:*
cisco ios_xr * - - cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*
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
20220413 Cisco IOS XR Software Border Gateway Protocol Ethernet VPN Denial of Service Vulnerability vendor-advisory
cve.org
访问
CVSS评分详情
3.1 (cna)
MEDIUM
6.8
CVSS向量: CVSS:3.1/AV:N/AC:H/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:
2022-04-15 14:20:20
修改时间:
2024-11-06 16:24:51
创建时间:
2025-11-11 15:37:15
更新时间:
2025-11-11 15:57:14
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-2022-20758 2025-11-11 15:21:15 2025-11-11 07:37:15
NVD nvd_CVE-2022-20758 2025-11-11 14:58:16 2025-11-11 07:45:32
CNNVD cnnvd_CNNVD-202204-3304 2025-11-11 15:10:52 2025-11-11 07:57:14
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 15:57:14
vulnerability_type: 未提取 → 资源管理错误; cnnvd_id: 未提取 → CNNVD-202204-3304; data_sources: ['cve', 'nvd'] → ['cnnvd', 'cve', 'nvd']
查看详细变更
  • vulnerability_type: 未提取 -> 资源管理错误
  • cnnvd_id: 未提取 -> CNNVD-202204-3304
  • data_sources: ['cve', 'nvd'] -> ['cnnvd', 'cve', 'nvd']
v2 NVD
2025-11-11 15:45:32
affected_products_count: 1 → 2; data_sources: ['cve'] → ['cve', 'nvd']
查看详细变更
  • affected_products_count: 1 -> 2
  • data_sources: ['cve'] -> ['cve', 'nvd']