nextcloud talk 危险类型文件的不加限制上传
CVE编号
CVE-2021-39222利用情况
暂无补丁情况
N/A披露时间
2021-11-16漏洞描述
Nextcloud is an open-source, self-hosted productivity platform. The Nextcloud Talk application was vulnerable to a stored Cross-Site Scripting (XSS) vulnerability. For exploitation, a user would need to right-click on a malicious file and open the file in a new tab. Due the strict Content-Security-Policy shipped with Nextcloud, this issue is not exploitable on modern browsers supporting Content-Security-Policy. It is recommended that the Nextcloud Talk application is upgraded to patched versions 10.0.7, 10.1.4, 11.1.2, 11.2.0 or 12.0.0. As a workaround, use a browser that has support for Content-Security-Policy.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/security-advisories/security/advisories/GHSA-xhx... | |
| https://github.com/nextcloud/spreed/pull/542 | |
| https://hackerone.com/reports/1135481 |
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 | talk | * | Up to (excluding) 10.0.7 | |||||
| 运行在以下环境 | |||||||||
| 应用 | nextcloud | talk | * | From (including) 10.1.0 | Up to (excluding) 10.1.4 | ||||
| 运行在以下环境 | |||||||||
| 应用 | nextcloud | talk | * | From (including) 11.0.0 | Up to (excluding) 11.1.2 | ||||
- 攻击路径 网络
- 攻击复杂度 高
- 权限要求 低
- 影响范围 未更改
- 用户交互 需要
- 可用性 无
- 保密性 高
- 完整性 高
| CWE-ID | 漏洞类型 |
| CWE-434 | 危险类型文件的不加限制上传 |
| CWE-79 | 在Web页面生成时对输入的转义处理不恰当（跨站脚本） |
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