CVE-2023-35173— End-to-End encrypted file-drops can be made inaccessible
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I. Basic Information for CVE-2023-35173
Vulnerability Information
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Vulnerability Title
End-to-End encrypted file-drops can be made inaccessible
Source: NVD (National Vulnerability Database)
Vulnerability Description
Nextcloud End-to-end encryption app provides all the necessary APIs to implement End-to-End encryption on the client side. By providing an invalid meta data file, an attacker can make previously dropped files inaccessible. It is recommended that the Nextcloud End-to-end encryption app is upgraded to version 1.12.4 that contains the fix.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
访问控制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Nextcloud 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nextcloud是德国Nextcloud公司的一套开源的自托管文件同步和共享的通信应用平台。 Nextcloud End-to-end encryption app 1.12.0及之前版本存在安全漏洞，该漏洞源于允许攻击者通过提供无效的元数据文件使以前丢弃的文件无法访问。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| nextcloud | security-advisories | >= 1.12.0, < 1.12.4 | - |
II. Public POCs for CVE-2023-35173
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://hackerone.com/reports/1914115x_refsource_MISC
- https://github.com/nextcloud/end_to_end_encryption/pull/435x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2023-35173
Same Patch Batch · nextcloud · 2023-06-23 · 5 CVEs total
| CVE-2023-35172 | 8.7 HIGH | Nextcloud Server password reset endpoint is not brute force protected |
| CVE-2023-35928 | 8.5 HIGH | Nextcloud user scoped external storage can be used to gather credentials of other users |
| CVE-2023-35927 | 7.6 HIGH | Nextcloud system addressbooks can be modified by malicious trusted server |
| CVE-2023-35171 | 4.1 MEDIUM | Nextcloud Server vulnerable to open redirect on "Unsupported browser" warning |
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V. Comments for CVE-2023-35173
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