中危 dropbear_ssh_project dropbear_ssh 认证机制不恰当
CVE编号
CVE-2021-36369利用情况
暂无补丁情况
官方补丁披露时间
2022-10-13漏洞描述
An issue was discovered in Dropbear through 2020.81. Due to a non-RFC-compliant check of the available authentication methods in the client-side SSH code, it is possible for an SSH server to change the login process in its favor. This attack can bypass additional security measures such as FIDO2 tokens or SSH-Askpass. Thus, it allows an attacker to abuse a forwarded agent for logging on to another server unnoticed.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 | dropbear_ssh_project | dropbear_ssh | * | Up to (including) 2020.81 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_10 | dropbear | * | Up to (excluding) 2018.76-5+deb10u2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_11 | dropbear | * | Up to (including) 2020.81-3 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_12 | dropbear | * | Up to (excluding) 2022.82-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_sid | dropbear | * | Up to (excluding) 2022.82-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_EPEL_7 | dropbear-debuginfo | * | Up to (excluding) 2017.75-3.el7 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_EPEL_8 | dropbear-debuginfo | * | Up to (excluding) 2019.78-5.el8 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_EPEL_9 | dropbear-debuginfo | * | Up to (excluding) 2020.80-7.el9 | |||||
- 攻击路径 本地
- 攻击复杂度 复杂
- 权限要求 普通权限
- 影响范围 越权影响
- EXP成熟度 未验证
- 补丁情况 官方补丁
- 数据保密性 数据泄露
- 数据完整性 无影响
- 服务器危害 无影响
- 全网数量 N/A
| CWE-ID | 漏洞类型 |
| CWE-287 | 认证机制不恰当 |
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