CVE-2023-20072— Cisco IOS XE Software Fragmented Tunnel Protocol Packet Denial of Service Vulnerability
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，该漏洞源于对大碎片隧道协议数据包的处理不当。
Possible ATT&CK Techniques 2 AI
T1498 · Network Denial of Service T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2023-20072
Vulnerability Information
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Vulnerability Title
Cisco IOS XE Software Fragmented Tunnel Protocol Packet Denial of Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the fragmentation handling code of tunnel protocol packets in Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected system to reload, resulting in a denial of service (DoS) condition. This vulnerability is due to the improper handling of large fragmented tunnel protocol packets. One example of a tunnel protocol is Generic Routing Encapsulation (GRE). An attacker could exploit this vulnerability by sending crafted fragmented packets to an affected system. A successful exploit could allow the attacker to cause the affected system to reload, 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
输入验证不恰当
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，该漏洞源于对大碎片隧道协议数据包的处理不当。
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-2023-20072
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2023-20072 (1)
Same Patch Batch · Cisco · 2023-03-23 · 18 CVEs total
| CVE-2023-20027 | 8.6 HIGH | Cisco IOS XE Software Virtual Fragmentation Reassembly Denial of Service Vulnerability |
| CVE-2023-20080 | 8.6 HIGH | Cisco IOS and IOS XE Software IPv6 DHCP (DHCPv6) Relay and Server Denial of Service Vulner |
| CVE-2023-20055 | 8.0 HIGH | Cisco DNA Center Privilege Escalation Vulnerability |
| CVE-2023-20035 | 7.8 HIGH | Cisco IOS XE SD-WAN Software Command Injection Vulnerability |
| CVE-2023-20065 | 7.8 HIGH | Cisco IOS XE Software 安全漏洞 |
| CVE-2023-20112 | 7.4 HIGH | Cisco Access Point Software Association Request Denial of Service Vulnerability |
| CVE-2023-20067 | 7.4 HIGH | Cisco IOS XE Software for Wireless LAN Controllers HTTP Client Profiling Denial of Service |
| CVE-2023-20100 | 6.8 MEDIUM | Cisco IOS XE Software for Wireless LAN Controllers CAPWAP Join Denial of Service Vulnerabi |
| CVE-2023-20081 | 6.8 MEDIUM | Cisco Adaptive Security Appliance Software, Firepower Threat Defense Software, IOS Softwar |
| CVE-2023-20113 | 6.5 MEDIUM | Cisco SD-WAN vManage Software Cross-Site Request Forgery Vulnerability |
| CVE-2023-20066 | 6.5 MEDIUM | Cisco IOS XE Software Web UI Path Traversal Vulnerability |
| CVE-2023-20056 | 6.5 MEDIUM | Cisco Access Point Software Denial of Service Vulnerability |
| CVE-2023-20082 | 6.1 MEDIUM | Cisco IOS XE Software for Cisco Catalyst 9300 Series Switches Secure Boot Bypass Vulnerabi |
| CVE-2023-20097 | 4.6 MEDIUM | Cisco Access Point Software Command Injection Vulnerability |
| CVE-2023-20029 | 4.4 MEDIUM | Cisco IOS XE Software Privilege Escalation Vulnerability |
| CVE-2023-20059 | 4.3 MEDIUM | Cisco DNA Center Information Disclosure Vulnerability |
| CVE-2023-20107 | Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Low-Entro |
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V. Comments for CVE-2023-20072
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