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CVE-2022-35931— Nextcloud Password Policy's generated passwords are not fully validated by HIBPValidator

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 Password Policy存在安全漏洞，该漏洞源于其随机密码生成器可能在非常罕见的情况下生成验证器本身会阻止的普通密码。以下版本受到影响：22.2.10版本、23.0.7版本、24.0.3之前的版本。

CVSS 2.7 · Low EPSS 0.45% · P37

Possible ATT&CK Techniques 1 AI

T1098 · Account Manipulation
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I. Basic Information for CVE-2022-35931

Vulnerability Information
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Vulnerability Title
Nextcloud Password Policy's generated passwords are not fully validated by HIBPValidator
Source: CVE Program / CVE List V5
Vulnerability Description
Nextcloud Password Policy is an app that enables a Nextcloud server admin to define certain rules for passwords. Prior to versions 22.2.10, 23.0.7, and 24.0.3 the random password generator may, in very rare cases, generate common passwords that the validator itself would block. Upgrade Nextcloud Server to 22.2.10, 23.0.7 or 24.0.3 to receive a patch for the issue in Password Policy. There are no known workarounds available.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
口令使用弱密码学算法
Source: CVE Program / CVE List V5
Vulnerability Title
Nextcloud 加密问题漏洞
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 Password Policy存在安全漏洞，该漏洞源于其随机密码生成器可能在非常罕见的情况下生成验证器本身会阻止的普通密码。以下版本受到影响：22.2.10版本、23.0.7版本、24.0.3之前的版本。
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 >= 24.0.0, < 24.0.3 -

II. Public POCs for CVE-2022-35931

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III. Intelligence Information for CVE-2022-35931

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Patches & Fixes for CVE-2022-35931 (1)

Vendor Advisories for CVE-2022-35931 (1)

IV. Related Vulnerabilities

Same product: security-advisories
Same vendor: nextcloud
Same weakness: CWE-261

V. Comments for CVE-2022-35931

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