CVE编号
CVE-2021-32727利用情况
暂无补丁情况
N/A披露时间
2021-07-13漏洞描述
Nextcloud Android Client is the Android client for Nextcloud. Clients using the Nextcloud end-to-end encryption feature download the public and private key via an API endpoint. In versions prior to 3.16.1, the Nextcloud Android client skipped a step that involved the client checking if a private key belonged to a previously downloaded public certificate. If the Nextcloud instance served a malicious public key, the data would be encrypted for this key and thus could be accessible to a malicious actor. The vulnerability is patched in version 3.16.1. As a workaround, do not add additional end-to-end encrypted devices to a user account.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/android/pull/8438 | |
| https://github.com/nextcloud/end_to_end_encryption_rfc/blob/7f002996397faefb6... | |
| https://github.com/nextcloud/security-advisories/security/advisories/GHSA-5v3... | |
| https://hackerone.com/reports/1189162 |
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) 3.16.1 |
|||||
- 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 无
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