CVE-2024-52520— Nextcloud Server's link reference provider can be tricked into downloading bigger files than intended
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I. Basic Information for CVE-2024-52520
Vulnerability Information
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Vulnerability Title
Nextcloud Server's link reference provider can be tricked into downloading bigger files than intended
Source: NVD (National Vulnerability Database)
Vulnerability Description
Nextcloud Server is a self hosted personal cloud system. Due to a pre-flighted HEAD request, the link reference provider could be tricked into downloading bigger websites than intended, to find open-graph data. It is recommended that the Nextcloud Server is upgraded to 28.0.10 or 29.0.7 and Nextcloud Enterprise Server is upgraded to 27.1.11.8, 28.0.10 or 29.0.7.
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
未加控制的资源消耗(资源穷尽)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Nextcloud 资源管理错误漏洞
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 存在资源管理错误漏洞，该漏洞源于由于预先发送的 HEAD 请求，链接引用提供程序可能会被诱骗下载比预期更大的网站，以查找开放图数据。
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 | >= 28.0.0, < 28.0.10 | - |
II. Public POCs for CVE-2024-52520
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
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Same Patch Batch · nextcloud · 2024-11-15 · 17 CVEs total
| CVE-2024-52508 | 8.2 HIGH | Nextcloud Mail auto configurator can be tricked into sending account information to wrong |
| CVE-2024-52511 | 6.3 MEDIUM | Nextcloud Tables has an Authorization Bypass Through User-Controlled Key in Tables |
| CVE-2024-52515 | 5.7 MEDIUM | Nextcloud Server has incomplete sanitization of SVG files allows to embed other images int |
| CVE-2024-52517 | 4.6 MEDIUM | Nextcloud Server's global credentials of external storages are sent back to the frontend |
| CVE-2024-52523 | 4.6 MEDIUM | Nextcloud Server Custom defined credentials of external storages are sent back to the fron |
| CVE-2024-52518 | 4.4 MEDIUM | Nextcloud Server is missing password confirmation when changing external storage options |
| CVE-2024-52510 | 4.2 MEDIUM | Nextcloud Desktop client behaves incorrectly if the initial end-to-end-encryption signatur |
| CVE-2024-52514 | 4.1 MEDIUM | Nextcloud Server allows users to copy folder that contain files that are blocked by the fi |
| CVE-2024-52509 | 3.5 LOW | Nextcloud Mail app does not respect download permissions in shares |
| CVE-2024-52507 | 3.5 LOW | Share information of the Nextcloud Tables app is not limited to affected users |
| CVE-2024-52512 | 3.3 LOW | Nextcloud User OIDC has an open redirection when logging in with User OIDC |
| CVE-2024-52516 | 3.0 LOW | Nextcloud Server's shares are not removed when user is limited to share with in their grou |
| CVE-2024-52519 | 2.7 LOW | Nextcloud Server's OAuth2 client secrets were stored in a recoverable way |
| CVE-2024-52513 | 2.6 LOW | Nextcloud Server's Attachments folder for Text app is accessible on "Files drop" and "Pass |
| CVE-2024-52521 | 2.6 LOW | Nextcloud Server has a potential hash collision for background jobs could skip queuing the |
| CVE-2024-52525 | 1.8 LOW | Nextcloud Server User password is available in memory of the PHP process |
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V. Comments for CVE-2024-52520
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