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CVE-2024-37316— Nextcloud Calendar's event create can create attachments that link to other websites

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 Calendar 4.6.8、4.7.2之前版本存在安全漏洞，该漏洞源于允许经过身份验证的用户可以通过活动创建，创建链接到其他网站的附件。

CVSS 4.6 · Medium EPSS 0.36% · P28

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise
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I. Basic Information for CVE-2024-37316

Vulnerability Information
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Vulnerability Title
Nextcloud Calendar's event create can create attachments that link to other websites
Source: CVE Program / CVE List V5
Vulnerability Description
Nextcloud Calendar is a calendar app for Nextcloud. Authenticated users could create an event with manipulated attachment data leading to a bad redirect for participants when clicked. It is recommended that the Nextcloud Calendar App is upgraded to 4.6.8 or 4.7.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
非预期数据类型处理不恰当
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 Calendar 4.6.8、4.7.2之前版本存在安全漏洞，该漏洞源于允许经过身份验证的用户可以通过活动创建，创建链接到其他网站的附件。
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 >= 4.3.0, < 4.6.8 -

II. Public POCs for CVE-2024-37316

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III. Intelligence Information for CVE-2024-37316

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Patches & Fixes for CVE-2024-37316 (1)

Vendor Advisories for CVE-2024-37316 (1)

Other References for CVE-2024-37316 (1)

Same Patch Batch · nextcloud · 2024-06-14 · 12 CVEs total

CVE-2024-37882 8.1 HIGH Nextcloud Server can reshare read&share only folder with more permissions
CVE-2024-37313 7.3 HIGH Nextcloud server allows the by-pass the second factor
CVE-2024-37312 6.3 MEDIUM Nextcloud user_oidc app's ID4me feature is available even when disabled
CVE-2024-37886 5.4 MEDIUM Nextcloud user_oidc's ID4me does not validate signature or expiration
CVE-2024-37317 4.6 MEDIUM Nextcloud Notes app can be tricked into using a received share created before the user log
CVE-2024-37883 4.3 MEDIUM Nextcloud Deck can access comments and attachments of deleted cards
CVE-2024-37885 3.8 LOW Code injection in Nextcloud Desktop Client for macOS
CVE-2024-37314 3.5 LOW Nextcloud Photos' shared albums have no restriction on photo removal
CVE-2024-37315 3.5 LOW Nextcloud Server's read-only users can restore old versions
CVE-2024-37884 3.5 LOW Nextcloud Server's users can delete old versions of read-only shared files
CVE-2024-37887 3.5 LOW Nextcloud Server's events information leaked with shared calendars on recurrence exception

IV. Related Vulnerabilities

Same product: security-advisories
Same vendor: nextcloud
Same weakness: CWE-241

V. Comments for CVE-2024-37316

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