中危 arm mbed_tls 缓冲区大小计算不正确
CVE编号
CVE-2020-36475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 2.25.0 (and before 2.16.9 LTS and before 2.7.18 LTS). The calculations performed by mbedtls_mpi_exp_mod are not limited; thus, supplying overly large parameters could lead to denial of service when generating Diffie-Hellman key pairs.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。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) 2.7.18 | |||||
| 运行在以下环境 | |||||||||
| 应用 | arm | mbed_tls | * | From (including) 2.17.0 | Up to (excluding) 2.25.0 | ||||
| 运行在以下环境 | |||||||||
| 应用 | arm | mbed_tls | * | From (including) 2.8.0 | Up to (excluding) 2.16.9 | ||||
| 运行在以下环境 | |||||||||
| 系统 | debian_10 | mbedtls | * | Up to (excluding) 2.16.9-0~deb10u1 | |||||
| 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) 2.16.9-0.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_9 | mbedtls | * | Up to (excluding) 2.4.2-1+deb9u4 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_sid | mbedtls | * | Up to (excluding) 2.16.9-0.1 | |||||
- 攻击路径 远程
- 攻击复杂度 容易
- 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 DoS
- 全网数量 N/A
| CWE-ID | 漏洞类型 |
| CWE-131 | 缓冲区大小计算不正确 |
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