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CVE-2023-25161— Nextcloud Server's missing rate limiting on password reset functionality allows sending lots of emails

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，该漏洞源于缺少对密码重置功能的速率限制，攻击者利用该漏洞可能会导致服务速度减慢、存储溢出或成本影响。

CVSS 3.7 · Low EPSS 0.73% · P51

Possible ATT&CK Techniques 1 AI

T1498.002 · Reflection Amplification
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I. Basic Information for CVE-2023-25161

Vulnerability Information
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Vulnerability Title
Nextcloud Server's missing rate limiting on password reset functionality allows sending lots of emails
Source: CVE Program / CVE List V5
Vulnerability Description
Nextcloud Server is the file server software for Nextcloud, a self-hosted productivity platform. Nextcloud Server and Nextcloud Enterprise Server prior to versions 25.0.1 24.0.8, and 23.0.12 missing rate limiting on password reset functionality. This could result in service slowdown, storage overflow, or cost impact when using external email services. Users should upgrade to Nextcloud Server 25.0.1, 24.0.8, or 23.0.12 or Nextcloud Enterprise Server 25.0.1, 24.0.8, or 23.0.12 to receive a patch. No known workarounds are available.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
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 Server存在安全漏洞，该漏洞源于缺少对密码重置功能的速率限制，攻击者利用该漏洞可能会导致服务速度减慢、存储溢出或成本影响。
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 -

II. Public POCs for CVE-2023-25161

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III. Intelligence Information for CVE-2023-25161

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Patches & Fixes for CVE-2023-25161 (1)

Vendor Advisories for CVE-2023-25161 (1)

Other References for CVE-2023-25161 (1)

Same Patch Batch · nextcloud · 2023-02-13 · 4 CVEs total

CVE-2023-25162 5.3 MEDIUM Nextcloud Server vulnerable to SSRF via filter bypass due to lax checking on IPs
CVE-2023-25160 4.1 MEDIUM IDOR Vulnerability in Nextcloud Mail
CVE-2023-25159 2.3 LOW Nextcloud Server previews are accessible without a watermark

IV. Related Vulnerabilities

Same product: security-advisories
Same vendor: nextcloud
Same weakness: CWE-284

V. Comments for CVE-2023-25161

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