CVE-2022-20915— Cisco IOS XE Software IPv6 VPN over MPLS Denial of Service Vulnerability
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I. Basic Information for CVE-2022-20915
Vulnerability Information
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Vulnerability Title
Cisco IOS XE Software IPv6 VPN over MPLS Denial of Service Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in the implementation of IPv6 VPN over MPLS (6VPE) with Zone-Based Firewall (ZBFW) of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper error handling of an IPv6 packet that is forwarded from an MPLS and ZBFW-enabled interface in a 6VPE deployment. An attacker could exploit this vulnerability by sending a crafted IPv6 packet sourced from a device on the IPv6-enabled virtual routing and forwarding (VRF) interface through the affected device. A successful exploit could allow the attacker to reload the device, resulting in a DoS condition.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
输入的错误解释
Source: NVD (National Vulnerability Database)
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 IPv6 VPN存在安全漏洞。攻击者利用该漏洞可以重新加载设备，从而导致拒绝服务情况。
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 | n/a | - |
II. Public POCs for CVE-2022-20915
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Cisco · 2022-10-10 · 7 CVEs total
| CVE-2022-20837 | 8.6 HIGH | Cisco IOS XE Software DNS NAT Protocol Application Layer Gateway Denial of Service Vulnera |
| CVE-2022-20870 | 8.6 HIGH | Cisco IOS XE Software for Catalyst Switches MPLS Denial of Service Vulnerability |
| CVE-2022-20920 | 7.7 HIGH | Cisco IOS and IOS XE Software SSH Denial of Service Vulnerability |
| CVE-2022-20944 | 6.1 MEDIUM | Cisco IOS XE Software for Catalyst 9200 Series Switches Arbitrary Code Execution Vulnerabi |
| CVE-2022-20830 | 5.3 MEDIUM | Cisco Software-Defined Application Visibility and Control on Cisco vManage Authentication |
| CVE-2022-20864 | 4.6 MEDIUM | Cisco IOS XE ROM Monitor Software for Catalyst Switches Information Disclosure Vulnerabili |
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V. Comments for CVE-2022-20915
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