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I. Basic Information for CVE-2020-36477
Vulnerability Information

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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
An issue was discovered in Mbed TLS before 2.24.0. The verification of X.509 certificates when matching the expected common name (the cn argument of mbedtls_x509_crt_verify) with the actual certificate name is mishandled: when the subjecAltName extension is present, the expected name is compared to any name in that extension regardless of its type. This means that an attacker could impersonate a 4-byte or 16-byte domain by getting a certificate for the corresponding IPv4 or IPv6 address (this would require the attacker to control that IP address, though).
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
ARM mbed TLS 信任管理问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ARM mbed TLS是英国ARM公司的一款为mbed产品提供安全通讯和加密功能的产品。 ARM mbed TLS 2.24.0之前版本存在安全漏洞,该漏洞源于将预期的公共名称与实际的证书名称匹配时,对X.509证书的验证处理错误,当SubjectCaltName扩展存在时,预期名称将与该扩展中的任何名称进行比较,而不管其类型如何。这意味着攻击者可以通过获取相应IPv4或IPv6地址的证书来模拟4字节或16字节域。
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
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II. Public POCs for CVE-2020-36477
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III. Intelligence Information for CVE-2020-36477
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IV. Related Vulnerabilities
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