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CVE-2021-1134— Cisco DNA Center Certificate Validation Vulnerability

Quick assessment

Affected
Cisco Cisco Digital Network Architecture Center (DNA Center)
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 DNA Center是美国思科（Cisco）公司的一个网络管理和命令中心服务。 Cisco DNA center 存在安全漏洞，该漏洞源于在DNA中心和ISE服务器之间建立连接时使用的X.509证书的不完全验证。攻击者可利用该漏洞提供一个精心制作的证书，然后可以拦截ISE和DNA中心之间的通信，进而查看和修改ISE维护的有关连接到网络的客户端的敏感信息。

AI Predicted 9.1 Difficulty: Easy EPSS 0.77% · P54
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I. Basic Information for CVE-2021-1134

Vulnerability Information
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Vulnerability Title
Cisco DNA Center Certificate Validation Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the Cisco Identity Services Engine (ISE) integration feature of the Cisco DNA Center Software could allow an unauthenticated, remote attacker to gain unauthorized access to sensitive data. The vulnerability is due to an incomplete validation of the X.509 certificate used when establishing a connection between DNA Center and an ISE server. An attacker could exploit this vulnerability by supplying a crafted certificate and could then intercept communications between the ISE and DNA Center. A successful exploit could allow the attacker to view and alter sensitive information that the ISE maintains about clients that are connected to the network.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
证书验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco DNA Center 信任管理问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco DNA Center是美国思科（Cisco）公司的一个网络管理和命令中心服务。 Cisco DNA center 存在安全漏洞，该漏洞源于在DNA中心和ISE服务器之间建立连接时使用的X.509证书的不完全验证。攻击者可利用该漏洞提供一个精心制作的证书，然后可以拦截ISE和DNA中心之间的通信，进而查看和修改ISE维护的有关连接到网络的客户端的敏感信息。
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 Digital Network Architecture Center (DNA Center) n/a -

II. Public POCs for CVE-2021-1134

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III. Intelligence Information for CVE-2021-1134

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Vendor Advisories for CVE-2021-1134 (1)

IV. Related Vulnerabilities

Same product: Cisco Digital Network Architecture Center (DNA Center)
Same vendor: Cisco
Same weakness: CWE-295

V. Comments for CVE-2021-1134

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