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CVE-2020-36477

Quick assessment

Affected
n/a n/a
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.

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。

AI Predicted 8.1 Difficulty: Moderate EPSS 0.83% · P55
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I. Basic Information for CVE-2020-36477

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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

Vendor Product Affected Versions CPE Subscribe
- n/a n/a -

II. Public POCs for CVE-2020-36477

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III. Intelligence Information for CVE-2020-36477

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Vendor Advisories for CVE-2020-36477 (1)

Other References for CVE-2020-36477 (2)

Same Patch Batch · n/a · 2021-08-23 · 34 CVEs total

CVE-2021-39371 PyWPS 代码问题漏洞
CVE-2021-35465 多款 ARM 产品安全漏洞
CVE-2021-39291 NetModule Router Software 日志信息泄露漏洞
CVE-2021-39290 NetModule Router Software 授权问题漏洞
CVE-2021-39289 NetModule Router Software 安全漏洞
CVE-2021-39245 多款Altus Sistemas de Automacao设备信任管理问题漏洞
CVE-2021-39244 多款Altus Sistemas de Automacao产品操作系统操作系统命令注入漏洞
CVE-2021-39243 多款 Altus Sistemas de Automacao 产品跨站请求伪造漏洞
CVE-2021-38598 OpenStack Neutron 安全漏洞
CVE-2021-22328 Huawei CloudEngine 6800 安全漏洞
CVE-2020-18771 Exiv2 缓冲区错误漏洞
CVE-2020-18773 Exiv2 缓冲区错误漏洞
CVE-2020-18774 Exiv2 数字错误漏洞
CVE-2020-36475 ARM mbed TLS 安全漏洞
CVE-2020-36476 ARM mbed TLS 安全漏洞
CVE-2020-36478 ARM mbed TLS 信任管理问题漏洞
CVE-2021-37750 MIT Kerberos 代码问题漏洞
CVE-2021-39602 Miniftpd 安全漏洞
CVE-2021-22357 Huawei S12700 输入验证错误漏洞
CVE-2021-22449 Huawei WATCH Kid 输入验证错误漏洞

Showing top 20 of 34 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: n/a
Same vendor: n/a

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