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CVE-2023-20227

Quick assessment

Affected
Cisco Cisco IOS XE Software
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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 存在安全漏洞，该漏洞源于第 2 层隧道协议 (L2TP) 功能中的漏洞可能允许未经身份验证的远程攻击者在受影响的设备上造成拒绝服务 (DoS) 情况。

CVSS 8.6 · High EPSS 0.87% · P57
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I. Basic Information for CVE-2023-20227

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the Layer 2 Tunneling Protocol (L2TP) feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper handling of certain L2TP packets. An attacker could exploit this vulnerability by sending crafted L2TP packets to an affected device. A successful exploit could allow the attacker to cause the device to reload unexpectedly, resulting in a DoS condition. Note: Only traffic directed to the affected system can be used to exploit this vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
7PK-错误
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco IOS XE Software 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
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 存在安全漏洞，该漏洞源于第 2 层隧道协议 (L2TP) 功能中的漏洞可能允许未经身份验证的远程攻击者在受影响的设备上造成拒绝服务 (DoS) 情况。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Cisco Cisco IOS XE Software 16.8.1 -

II. Public POCs for CVE-2023-20227

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III. Intelligence Information for CVE-2023-20227

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Same Patch Batch · Cisco · 2023-09-27 · 18 CVEs total

CVE-2023-20252 9.8 CRITICAL Cisco Catalyst SD-WAN Manager 授权问题漏洞
CVE-2023-20231 8.8 HIGH Cisco IOS XE Software 输入验证错误漏洞
CVE-2023-20187 8.6 HIGH Cisco IOS XE Software 安全漏洞
CVE-2023-20033 8.6 HIGH Cisco IOS XE Software 安全漏洞
CVE-2023-20226 8.6 HIGH Cisco IOS XE Software 安全漏洞
CVE-2023-20223 8.6 HIGH Cisco DNA Center 安全漏洞
CVE-2023-20186 8.0 HIGH Cisco IOS 安全漏洞
CVE-2023-20034 7.5 HIGH Cisco SD-WAN vManage 安全漏洞
CVE-2023-20254 7.2 HIGH Cisco Catalyst 安全漏洞
CVE-2023-20253 7.1 HIGH Cisco SD-WAN vManage 安全漏洞
CVE-2023-20109 6.6 MEDIUM Cisco IOS 缓冲区错误漏洞
CVE-2023-20202 6.1 MEDIUM Cisco IOS XE Software 安全漏洞
CVE-2023-20251 6.1 MEDIUM Cisco Wireless LAN Controller 缓冲区错误漏洞
CVE-2023-20176 5.8 MEDIUM Cisco Access Point 资源管理错误漏洞
CVE-2023-20262 5.3 MEDIUM Cisco Catalyst SD-WAN Manager 安全漏洞
CVE-2023-20268 4.7 MEDIUM Cisco Access Point Software Uncontrolled Resource Consumption Vulnerability
CVE-2023-20179 4.3 MEDIUM Cisco Catalyst SD-WAN Manager 跨站脚本漏洞

IV. Related Vulnerabilities

Same product: Cisco IOS XE Software
Same vendor: Cisco
Same weakness: CWE-388

V. Comments for CVE-2023-20227

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