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CVE-2021-22895

Quick assessment

Affected
n/a Nextcloud Desktop Client
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 存在安全漏洞，该漏洞源于3.3.1之前的Nextcloud桌面客户端容易受到不正确的证书验证，因为在使用“向提供商注册”流程时缺乏SSL证书验证。

AI Predicted 5.9 Difficulty: Easy EPSS 1.03% · P63

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-22895

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Nextcloud Desktop Client before 3.3.1 is vulnerable to improper certificate validation due to lack of SSL certificate verification when using the "Register with a Provider" flow.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
证书验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Nextcloud 信任管理问题漏洞
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 存在安全漏洞，该漏洞源于3.3.1之前的Nextcloud桌面客户端容易受到不正确的证书验证，因为在使用“向提供商注册”流程时缺乏SSL证书验证。
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 Desktop Client Fixed in 3.3.1 -

II. Public POCs for CVE-2021-22895

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III. Intelligence Information for CVE-2021-22895

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Patches & Fixes for CVE-2021-22895 (1)

Vendor Advisories for CVE-2021-22895 (2)

Other References for CVE-2021-22895 (2)

Same Patch Batch · n/a · 2021-06-11 · 79 CVEs total

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CVE-2021-0472 Google Android 安全漏洞
CVE-2021-32930 Advantech Iview 访问控制错误漏洞
CVE-2021-32932 Advantech Iview SQL注入漏洞
CVE-2021-21795 Accusoft ImageGear 缓冲区错误漏洞
CVE-2021-21833 Accusoft ImageGear 输入验证错误漏洞
CVE-2021-20591 Mitsubishi Electric MELSEC iQ-R series 资源管理错误漏洞
CVE-2021-22906 Nextcloud 资源管理错误漏洞
CVE-2021-22915 Nextcloud server 处理逻辑错误漏洞
CVE-2021-21824 Accusoft ImageGear 缓冲区错误漏洞
CVE-2021-27408 Mmemed Welch Allyn Connex 缓冲区错误漏洞
CVE-2021-27410 Mmemed Welch Allyn Connex 缓冲区错误漏洞
CVE-2019-9475 Google Android 安全漏洞
CVE-2021-0466 Google Android 安全特征问题漏洞
CVE-2021-0476 Google Android 资源管理错误漏洞
CVE-2021-0481 Google Android 输入验证错误漏洞
CVE-2021-0482 Google Android 资源管理错误漏洞
CVE-2021-0484 Google Android 信息泄露漏洞
CVE-2021-22905 Nextcloud 信息泄露漏洞

Showing top 20 of 79 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Nextcloud Desktop Client
Same vendor: n/a
Same weakness: CWE-295

V. Comments for CVE-2021-22895

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