nextcloud nextcloud_server 通过用户控制密钥绕过授权机制

CVE编号

CVE-2021-32654

利用情况

暂无

补丁情况

N/A

披露时间

2021-06-02

漏洞描述

Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.11, 20.0.10, and 21.0.2, an attacker is able to receive write/read privileges on any Federated File Share. Since public links can be added as federated file share, this can also be exploited on any public link. Users can upgrade to patched versions (19.0.11, 20.0.10 or 21.0.2) or, as a workaround, disable federated file sharing.

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-jf9...
https://hackerone.com/reports/1170024

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_server	*		Up to (excluding) 19.0.11
	运行在以下环境
	应用	nextcloud	nextcloud_server	*	From (including) 20.0.0	Up to (excluding) 20.0.10
	运行在以下环境
	应用	nextcloud	nextcloud_server	*	From (including) 21.0.0	Up to (excluding) 21.0.2

CVSS3评分 9.1

• 攻击路径 网络
• 攻击复杂度 低
• 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

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N CWE-ID 漏洞类型 CWE-639 通过用户控制密钥绕过授权机制