CVE-2023-48301— Nextcloud Server HTML injection in search UI when selecting a circle with HTML in the display name
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存在安全漏洞，该漏洞源于允许攻击者在search UI中注入HTML代码。受影响的产品和版本：Nextcloud Server 25.0.13之前的25.0.0版本，26.0.8之前的26.0.0版本，27.1.3之前的27.0.0版本；Nextccloud Enterprise Server 25.0.13之前的25.0.0版本，26.0.8之前的26.0.0版本，27.1.3
Possible ATT&CK Techniques 2 AI
T1059 · Command and Scripting Interpreter T1189 · Drive-by Compromise
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I. Basic Information for CVE-2023-48301
Vulnerability Information
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Vulnerability Title
Nextcloud Server HTML injection in search UI when selecting a circle with HTML in the display name
Source: CVE Program / CVE List V5
Vulnerability Description
Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 25.0.0 and prior to versions 25.0.13, 26.0.8, and 27.1.3 of Nextcloud Server and Nextcloud Enterprise Server, an attacker could insert links into circles name that would be opened when clicking the circle name in a search filter. Nextcloud Server and Nextcloud Enterprise Server versions 25.0.13, 26.0.8, and 27.1.3 contain a fix for this issue. As a workaround, disable app circles.
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
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
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 Server存在安全漏洞，该漏洞源于允许攻击者在search UI中注入HTML代码。受影响的产品和版本：Nextcloud Server 25.0.13之前的25.0.0版本，26.0.8之前的26.0.0版本，27.1.3之前的27.0.0版本；Nextccloud Enterprise Server 25.0.13之前的25.0.0版本，26.0.8之前的26.0.0版本，27.1.3
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 | >= 25.0.0, < 25.0.13 | - |
|
II. Public POCs for CVE-2023-48301
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2023-48301 (1)
-
https://github.com/nextcloud/circles/pull/1415 x_refsource_MISC
Vendor Advisories for CVE-2023-48301 (1)
Other References for CVE-2023-48301 (1)
-
https://hackerone.com/reports/2210038 x_refsource_MISC
Same Patch Batch · nextcloud · 2023-11-21 · 8 CVEs total
| CVE-2023-48239 | 8.5 HIGH | Nextcloud Server users can make external storage mount points inaccessible for other users |
| CVE-2023-48306 | 5.0 MEDIUM | Nextcloud Server DNS pin middleware can be tricked into DNS rebinding allowing SSRF |
| CVE-2023-48304 | 4.3 MEDIUM | Nextcloud Server vulnerable to attacker enabling/disabling birthday calendar for any user |
| CVE-2023-48305 | 4.2 MEDIUM | Nextcloud Server user_ldap app logs user passwords in the log file on level debug |
| CVE-2023-48307 | 3.5 LOW | Nextcloud Mail app vulnerable to Server-Side Request Forgery |
| CVE-2023-48302 | 3.5 LOW | Nextcloud Server vulnerable to Self XSS when pasting HTML into Text app with Ctrl+Shift+V |
| CVE-2023-48303 | 2.4 LOW | Nextcloud Server admins can change authentication details of user configured external stor |
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