nextcloud richdocuments 授权机制缺失
CVE编号
CVE-2021-32748利用情况
暂无补丁情况
N/A披露时间
2021-07-28漏洞描述
Nextcloud Richdocuments in an open source self hosted online office. Nextcloud uses the WOPI ("Web Application Open Platform Interface") protocol to communicate with the Collabora Editor, the communication between these two services was not protected by a credentials or IP check. Whilst this does not result in gaining access to data that the user has not yet access to, it can result in a bypass of any enforced watermark on documents as described on the [Nextcloud Virtual Data Room](https://nextcloud.com/virtual-data-room/) website and [our documentation](https://portal.nextcloud.com/article/nextcloud-and-virtual-data-room-configuration-59.html). The Nextcloud Richdocuments releases 3.8.3 and 4.2.0 add an additional admin settings for an allowlist of IP addresses that can access the WOPI API. We recommend upgrading and configuring the allowlist to a list of Collabora servers. There is no known workaround. Note that this primarily results a bypass of any configured watermark or download protection using File Access Control. If you do not require or rely on these as a security feature no immediate action is required on your end.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/nextcloud/richdocuments/pull/1640 | |
| https://github.com/nextcloud/security-advisories/security/advisories/GHSA-24x... | |
| https://hackerone.com/reports/1194606 |
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 | richdocuments | * | Up to (excluding) 3.8.3 | |||||
| 运行在以下环境 | |||||||||
| 应用 | nextcloud | richdocuments | * | From (including) 4.0.0 | Up to (excluding) 4.2.0 | ||||
- 攻击路径 网络
- 攻击复杂度 低
- 权限要求 低
- 影响范围 未更改
- 用户交互 无
- 可用性 无
- 保密性 无
- 完整性 低
| CWE-ID | 漏洞类型 |
| CWE-862 | 授权机制缺失 |
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