seafile seafile_server 通过用户控制密钥绕过授权机制
CVE编号
CVE-2021-43820利用情况
暂无补丁情况
N/A披露时间
2021-12-15漏洞描述
Seafile is an open source cloud storage system. A sync token is used in Seafile file syncing protocol to authorize access to library data. To improve performance, the token is cached in memory in seaf-server. Upon receiving a token from sync client or SeaDrive client, the server checks whether the token exist in the cache. However, if the token exists in cache, the server doesn't check whether it's associated with the specific library in the URL. This vulnerability makes it possible to use any valid sync token to access data from any **known** library. Note that the attacker has to first find out the ID of a library which it has no access to. The library ID is a random UUID, which is not possible to be guessed. There are no workarounds for this issue.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/haiwen/seafile-server/pull/520 | |
| https://github.com/haiwen/seafile-server/security/advisories/GHSA-m3wc-jv6r-hvv8 |
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 | seafile | seafile_server | * | Up to (excluding) 8.0.15 | |||||
| 运行在以下环境 | |||||||||
| 应用 | seafile | seafile_server | * | Up to (excluding) 8.0.8 | |||||
| 运行在以下环境 | |||||||||
| 应用 | seafile | seafile_server | * | From (including) 9.0.0 | Up to (excluding) 9.0.2 | ||||
- 攻击路径 网络
- 攻击复杂度 高
- 权限要求 无
- 影响范围 未更改
- 用户交互 无
- 可用性 无
- 保密性 高
- 完整性 高
| CWE-ID | 漏洞类型 |
| CWE-639 | 通过用户控制密钥绕过授权机制 |
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