CVE-2022-41970— Nextcloud Server's disabled download shares still allow download through preview images
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I. Basic Information for CVE-2022-41970
Vulnerability Information
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Vulnerability Title
Nextcloud Server's disabled download shares still allow download through preview images
Source: NVD (National Vulnerability Database)
Vulnerability Description
Nextcloud Server is an open source personal cloud server. Prior to versions 24.0.7 and 25.0.1, disabled download shares still allow download through preview images. Images could be downloaded and previews of documents (first page) can be downloaded without being watermarked. Versions 24.0.7 and 25.0.1 contain a fix for this issue. No known workarounds are available.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N
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 Server 24.0.7之前版本、25.0.1之前版本存在安全漏洞，该漏洞源于禁用的下载共享仍然允许通过预览图像下载。
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 | < 24.0.7 | - |
II. Public POCs for CVE-2022-41970
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://hackerone.com/reports/1745766x_refsource_MISC
- https://github.com/nextcloud/server/pull/34788x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2022-41970
Same Patch Batch · nextcloud · 2022-12-01 · 4 CVEs total
| CVE-2022-41971 | 4.8 MEDIUM | Nextcloud Talk guests can continue to receive video streams from call after being removed |
| CVE-2022-41968 | 3.5 LOW | Nextcloud Server's calendar name length not validated before writing to database |
| CVE-2022-41969 | 2.4 LOW | Nextcloud Server has no password length limit when creating a user as an administrator |
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V. Comments for CVE-2022-41970
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