中危 nextcloud nextcloud 从非可信控制范围包含功能例程
CVE编号
CVE-2021-32802利用情况
POC 已公开补丁情况
官方补丁披露时间
2021-09-08漏洞描述
Nextcloud server is an open source, self hosted personal cloud. Nextcloud supports rendering image previews for user provided file content. For some image types, the Nextcloud server was invoking a third-party library that wasn't suited for untrusted user-supplied content. There are several security concerns with passing user-generated content to this library, such as Server-Side-Request-Forgery, file disclosure or potentially executing code on the system. The risk depends on your system configuration and the installed library version. It is recommended that the Nextcloud Server is upgraded to 20.0.12, 21.0.4 or 22.1.0. These versions do not use this library anymore. As a workaround users may disable previews by setting `enable_previews` to `false` in `config.php`.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 | nextcloud | nextcloud | * | Up to (excluding) 20.0.12 | |||||
| 运行在以下环境 | |||||||||
| 应用 | nextcloud | nextcloud | * | From (including) 21.0.0 | Up to (excluding) 21.0.4 | ||||
| 运行在以下环境 | |||||||||
| 应用 | nextcloud | nextcloud | * | From (including) 22.0.0 | Up to (excluding) 22.1.0 | ||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.2 | nextcloud | * | Up to (excluding) 20.0.12-lp152.3.12.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.3 | nextcloud | * | Up to (excluding) 20.0.12-bp153.2.6.1 | |||||
- 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 POC 已公开
- 补丁情况 官方补丁
- 数据保密性 数据泄露
- 数据完整性 传输被破坏
- 服务器危害 服务器失陷
- 全网数量 N/A
| CWE-ID | 漏洞类型 |
| CWE-829 | 从非可信控制范围包含功能例程 |
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