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CVE-2023-48307— Nextcloud Mail app vulnerable to Server-Side Request Forgery

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 Mail 2.2.8 之前、3.3.0之前版本存在代码问题漏洞，攻击者利用该漏洞可以使用邮件应用程序中不受保护的终结点来执行服务端请求伪造攻击。

CVSS 3.5 · Low EPSS 0.87% · P56

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2023-48307

Vulnerability Information
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Vulnerability Title
Nextcloud Mail app vulnerable to Server-Side Request Forgery
Source: CVE Program / CVE List V5
Vulnerability Description
Nextcloud Mail is the mail app for Nextcloud, a self-hosted productivity platform. Starting in version 1.13.0 and prior to version 2.2.8 and 3.3.0, an attacker can use an unprotected endpoint in the Mail app to perform a SSRF attack. Nextcloud Mail app versions 2.2.8 and 3.3.0 contain a patch for this issue. As a workaround, disable the mail app.
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
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Nextcloud 代码问题漏洞
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 Mail 2.2.8 之前、3.3.0之前版本存在代码问题漏洞，攻击者利用该漏洞可以使用邮件应用程序中不受保护的终结点来执行服务端请求伪造攻击。
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 >= 1.13.0, < 2.2.8 -

II. Public POCs for CVE-2023-48307

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III. Intelligence Information for CVE-2023-48307

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Patches & Fixes for CVE-2023-48307 (1)

Vendor Advisories for CVE-2023-48307 (1)

Other References for CVE-2023-48307 (1)

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-2023-48302 3.5 LOW Nextcloud Server vulnerable to Self XSS when pasting HTML into Text app with Ctrl+Shift+V
CVE-2023-48301 3.5 LOW Nextcloud Server HTML injection in search UI when selecting a circle with HTML in the disp
CVE-2023-48303 2.4 LOW Nextcloud Server admins can change authentication details of user configured external stor

IV. Related Vulnerabilities

Same product: security-advisories
Same vendor: nextcloud
Same weakness: CWE-918

V. Comments for CVE-2023-48307

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