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CVE-2022-41968— Nextcloud Server's calendar name length not validated before writing to database

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 Server 23.0.10之前版本、24.0.5之前版本存在资源管理错误漏洞，该漏洞源于在写入数据库之前，不会验证日历名称长度。

CVSS 3.5 · Low EPSS 0.92% · P60

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2022-41968

Vulnerability Information
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Vulnerability Title
Nextcloud Server's calendar name length not validated before writing to database
Source: CVE Program / CVE List V5
Vulnerability Description
Nextcloud Server is an open source personal cloud server. Prior to versions 23.0.10 and 24.0.5, calendar name lengths are not validated before writing to a database. As a result, an attacker can send unnecessary amounts of data against the database. Version 23.0.10 and 24.0.5 contain patches for the issue. No known workarounds are available.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
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 Server 23.0.10之前版本、24.0.5之前版本存在资源管理错误漏洞，该漏洞源于在写入数据库之前，不会验证日历名称长度。
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 < 23.0.10 -

II. Public POCs for CVE-2022-41968

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III. Intelligence Information for CVE-2022-41968

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Patches & Fixes for CVE-2022-41968 (1)

Vendor Advisories for CVE-2022-41968 (1)

Other References for CVE-2022-41968 (1)

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-2022-41970 2.6 LOW Nextcloud Server's disabled download shares still allow download through preview images
CVE-2022-41969 2.4 LOW Nextcloud Server has no password length limit when creating a user as an administrator

IV. Related Vulnerabilities

Same product: security-advisories
Same vendor: nextcloud
Same weakness: CWE-400