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I. Basic Information for CVE-2021-1611
Vulnerability Information

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Vulnerability Title
Cisco IOS XE Software for Catalyst 9800 Series Wireless Controllers EoGRE Denial of Service Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in Ethernet over GRE (EoGRE) packet processing of Cisco IOS XE Wireless Controller Software for the Cisco Catalyst 9800 Family Wireless Controller, Embedded Wireless Controller, and Embedded Wireless on Catalyst 9000 Series Switches could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper processing of malformed EoGRE packets. An attacker could exploit this vulnerability by sending malicious packets to the affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
资源管理错误
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco IOS和Cisco Catalyst 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IOS和Cisco Catalyst都是美国思科(Cisco)公司的产品。Cisco IOS是一套为其网络设备开发的操作系统。Cisco Catalyst是一系列交换机。 多款Cisco产品存在资源管理错误漏洞,该漏洞源于对畸形的EoGRE报文处理不当造成的。攻击者可利用该漏洞在受影响的设备上造成拒绝服务(DoS)条件。
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
VendorProductAffected VersionsCPESubscribe
CiscoCisco IOS XE Software n/a -
II. Public POCs for CVE-2021-1611
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III. Intelligence Information for CVE-2021-1611
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IV. Related Vulnerabilities
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