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I. Basic Information for CVE-2021-1566
Vulnerability Information

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Vulnerability Title
Cisco Email Security Appliance and Cisco Web Security Appliance Certificate Validation Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in the Cisco Advanced Malware Protection (AMP) for Endpoints integration of Cisco AsyncOS for Cisco Email Security Appliance (ESA) and Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to intercept traffic between an affected device and the AMP servers. This vulnerability is due to improper certificate validation when an affected device establishes TLS connections. A man-in-the-middle attacker could exploit this vulnerability by sending a crafted TLS packet to an affected device. A successful exploit could allow the attacker to spoof a trusted host and then extract sensitive information or alter certain API requests.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
证书信任链回溯不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco Advanced Malware Protection 信任管理问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Advanced Malware Protection(AMP)for Endpoints for Windows是美国思科(Cisco)公司的一款基于Windows平台的端点安全解决方案。该产品主要具有高级威胁预防、监测和响应等功能。 Cisco Advanced Malware Protection 存在安全漏洞,未经身份验证的远程攻击者可以拦截受影响设备和AMP之间的流量服务器,然后提取敏感信息或更改某些API请求。
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 Web Security Appliance (WSA) n/a -
II. Public POCs for CVE-2021-1566
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III. Intelligence Information for CVE-2021-1566
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IV. Related Vulnerabilities
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