CVE-2023-25816— nextcloud vulnerable to Uncontrolled Resource Consumption
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 25.0.3之前版本存在安全漏洞，该漏洞源于存在不受控制的资源消耗，用户可以配置一个很长的密码，在密码验证上消耗比预期更多的资源。
Possible ATT&CK Techniques 1 AI
T1496 · Resource Hijacking
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I. Basic Information for CVE-2023-25816
Vulnerability Information
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Vulnerability Title
nextcloud vulnerable to Uncontrolled Resource Consumption
Source: CVE Program / CVE List V5
Vulnerability Description
Nextcloud is an Open Source private cloud software. Versions 25.0.0 and above, prior to 25.0.3, are subject to Uncontrolled Resource Consumption. A user can configure a very long password, consuming more resources on password validation than desired. This issue is patched in 25.0.3 No workaround is available.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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 25.0.3之前版本存在安全漏洞，该漏洞源于存在不受控制的资源消耗，用户可以配置一个很长的密码，在密码验证上消耗比预期更多的资源。
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, < 25.0.3 | - |
|
II. Public POCs for CVE-2023-25816
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2023-25816 (1)
-
https://github.com/nextcloud/server/pull/35965 x_refsource_MISC
Vendor Advisories for CVE-2023-25816 (1)
Other References for CVE-2023-25816 (1)
-
https://hackerone.com/reports/1820864 x_refsource_MISC
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V. Comments for CVE-2023-25816
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