CVE-2021-39225— Missing permission check on Deck API
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I. Basic Information for CVE-2021-39225
Vulnerability Information
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Vulnerability Title
Missing permission check on Deck API
Source: NVD (National Vulnerability Database)
Vulnerability Description
Nextcloud is an open-source, self-hosted productivity platform. A missing permission check in Nextcloud Deck before 1.2.9, 1.4.5 and 1.5.3 allows another authenticated users to access Deck cards of another user. It is recommended that the Nextcloud Deck App is upgraded to 1.2.9, 1.4.5 or 1.5.3. There are no known workarounds aside from upgrading.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
通过用户控制密钥绕过授权机制
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存在安全漏洞，该漏洞源于网络系统或产品的代码开发过程中存在设计或实现不当的问题。
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 | < 1.2.9 | - |
II. Public POCs for CVE-2021-39225
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|---|
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- https://hackerone.com/reports/1331728x_refsource_MISC
- https://github.com/nextcloud/deck/pull/3316x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2021-39225
Same Patch Batch · nextcloud · 2021-10-25 · 8 CVEs total
| CVE-2021-41178 | 8.8 HIGH | File Traversal affecting SVG files on Nextcloud Server |
| CVE-2021-41177 | 8.1 HIGH | Rate-limits not working on instances without configured memory cache backend |
| CVE-2021-41179 | 6.5 MEDIUM | Two-Factor Authentication not enforced for pages marked as public |
| CVE-2021-39221 | 6.4 MEDIUM | XSS in Contacts |
| CVE-2021-39223 | 4.8 MEDIUM | File path disclosure of shared files in Richdocuments application |
| CVE-2021-39220 | 3.5 LOW | Bypass of image blocking in Nextcloud Mail |
| CVE-2021-39224 | 3.5 LOW | File path disclosure of shared files in OfficeOnline application |
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V. Comments for CVE-2021-39225
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