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CVE-2024-52519— Nextcloud Server's OAuth2 client secrets were stored in a recoverable way

Quick assessment

Affected
nextcloud security-advisories
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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OAuth2 客户端机密以可恢复的方式存储，因此攻击者只要访问数据库备份和 Nextcloud 配置文件，就能够解密它们。

CVSS 2.7 · Low EPSS 0.50% · P41

Possible ATT&CK Techniques 1 AI

T1552.005 · Cloud Instance Metadata API
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I. Basic Information for CVE-2024-52519

Vulnerability Information
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Vulnerability Title
Nextcloud Server's OAuth2 client secrets were stored in a recoverable way
Source: CVE Program / CVE List V5
Vulnerability Description
Nextcloud Server is a self hosted personal cloud system. The OAuth2 client secrets were stored in a recoverable way, so that an attacker that got access to a backup of the database and the Nextcloud config file, would be able to decrypt them. 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: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
敏感信息的不安全存储
Source: CVE Program / CVE List V5
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OAuth2 客户端机密以可恢复的方式存储，因此攻击者只要访问数据库备份和 Nextcloud 配置文件，就能够解密它们。
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-2024-52519

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III. Intelligence Information for CVE-2024-52519

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Patches & Fixes for CVE-2024-52519 (2)

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-2024-52520 5.7 MEDIUM Nextcloud Server's link reference provider can be tricked into downloading bigger files th
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-2024-52513 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

IV. Related Vulnerabilities

Same product: security-advisories
Same vendor: nextcloud
Same weakness: CWE-922

V. Comments for CVE-2024-52519

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