CVE-2022-20758— Cisco IOS XR资源管理错误漏洞
一分钟漏洞结论
影响对象
Cisco Cisco IOS XR Software
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
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。
可能的 ATT&CK 技术 1 AI
T1498.001 · Direct Network Flood
获取后续新漏洞提醒
登录后订阅
一、 漏洞 CVE-2022-20758 基础信息
漏洞信息
对漏洞内容有疑问？看看神龙的深度分析是否有帮助！
查看神龙十问 ↗
尽管我们使用了先进的大模型技术，但其输出仍可能包含不准确或过时的信息。神龙努力确保数据的准确性，但请您根据实际情况进行核实和判断。
Vulnerability Title
Cisco IOS XR Software Border Gateway Protocol Ethernet VPN Denial of Service Vulnerability
来源: CVE Program / CVE List V5
Vulnerability Description
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.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
资源管理错误
来源: CVE Program / CVE List V5
Vulnerability Title
Cisco IOS XR资源管理错误漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
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。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| Cisco | Cisco IOS XR Software | n/a | - |
|
二、漏洞 CVE-2022-20758 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
AI 生成 POC
高级
未找到公开 POC。
登录以生成 AI POC三、漏洞 CVE-2022-20758 的情报信息
请登录查看更多情报信息。
同批安全公告 · Cisco · 2022-04-15 · 共 34 条
| CVE-2022-20695 | 10.0 CRITICAL | Cisco Wireless LAN Controller 授权问题漏洞 |
| CVE-2022-20622 | 8.6 HIGH | Cisco Embedded Wireless Controller 安全漏洞 |
| CVE-2022-20678 | 8.6 HIGH | Cisco IOS XE Software 安全漏洞 |
| CVE-2022-20714 | 8.6 HIGH | Cisco IOS XR缓冲区错误漏洞 |
| CVE-2022-20697 | 8.6 HIGH | Cisco IOS XE Software安全漏洞 |
| CVE-2022-20682 | 8.6 HIGH | Cisco IOS XE Wireless Controller software 代码问题漏洞 |
| CVE-2022-20683 | 8.6 HIGH | Cisco IOS XE Software缓冲区错误漏洞 |
| CVE-2022-20716 | 7.8 HIGH | Cisco SD-WAN 安全漏洞 |
| CVE-2022-20681 | 7.8 HIGH | Cisco IOS XE Software安全漏洞 |
| CVE-2022-20692 | 7.7 HIGH | Cisco IOS和IOS XE资源管理错误漏洞 |
| CVE-2022-20684 | 7.4 HIGH | Cisco IOS输入验证错误漏洞 |
| CVE-2022-20761 | 7.4 HIGH | Cisco 1000 Series Connected Grid Router 输入验证错误漏洞 |
| CVE-2022-20739 | 7.3 HIGH | Cisco SD-WAN vManage Software 安全漏洞 |
| CVE-2022-20694 | 6.8 MEDIUM | Cisco IOS XR安全漏洞 |
| CVE-2022-20679 | 6.8 MEDIUM | 多款Cisco产品输入验证错误漏洞 |
| CVE-2022-20735 | 6.5 MEDIUM | Cisco SD-WAN vManage Software 跨站请求伪造漏洞 |
| CVE-2022-20747 | 6.5 MEDIUM | Cisco SD-WAN vManage Software 安全漏洞 |
| CVE-2022-20726 | 5.5 MEDIUM | Cisco Iox 安全漏洞 |
| CVE-2022-20677 | 5.5 MEDIUM | Cisco IOS XE 加密问题漏洞 |
| CVE-2022-20725 | 5.5 MEDIUM | Cisco IOS XE Software 跨站脚本漏洞 |
显示前 20 条，共 34 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2022-20758
暂无评论