中危 arm mbed_tls 证书验证不恰当
CVE编号
CVE-2020-36477利用情况
暂无补丁情况
官方补丁披露时间
2021-08-23漏洞描述
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).解决建议
建议您更新当前系统或软件至最新版，完成漏洞的修复。
参考链接 |
|
|---|---|
| https://github.com/ARMmbed/mbedtls/issues/3498 | |
| https://github.com/ARMmbed/mbedtls/releases/tag/v2.24.0 | |
| https://security.gentoo.org/glsa/202301-08 |
受影响软件情况
| # | 类型 | 厂商 | 产品 | 版本 | 影响面 | ||||
| 1 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 运行在以下环境 | |||||||||
| 应用 | arm | mbed_tls | * | Up to (excluding) 2.24.0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_10 | mbedtls | * | Up to (excluding) 2.16.0-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_11 | mbedtls | * | Up to (excluding) 2.16.9-0.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_12 | mbedtls | * | Up to (excluding) 2.28.0-0.3 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_sid | mbedtls | * | Up to (excluding) 2.28.0-0.3 | |||||
- 攻击路径 远程
- 攻击复杂度 困难
- 权限要求 无需权限
- 影响范围 全局影响
- EXP成熟度 未验证
- 补丁情况 官方补丁
- 数据保密性 无影响
- 数据完整性 传输被破坏
- 服务器危害 无影响
- 全网数量 N/A
| CWE-ID | 漏洞类型 |
| CWE-295 | 证书验证不恰当 |
Exp相关链接
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