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CVE-2021-22915

Quick assessment

Affected
n/a Nextcloud Server
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存在处理逻辑错误漏洞，该漏洞源于。Nextcloud server在19.0.11、20.0.10、21.0.2版本及之前版本中因为在限速考虑中没有包含IPv6子网，容易受到暴力破解攻击。这可能会导致攻击者可利用该漏洞绕过速率限制控制，比如Nextcloud brute-force protection。

AI Predicted 5.3 Difficulty: Easy EPSS 1.74% · P76
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I. Basic Information for CVE-2021-22915

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Nextcloud server before 19.0.11, 20.0.10, 21.0.2 is vulnerable to brute force attacks due to lack of inclusion of IPv6 subnets in rate-limiting considerations. This could potentially result in an attacker bypassing rate-limit controls such as the Nextcloud brute-force protection.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
过多认证尝试的限制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Nextcloud server 处理逻辑错误漏洞
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 server存在处理逻辑错误漏洞，该漏洞源于。Nextcloud server在19.0.11、20.0.10、21.0.2版本及之前版本中因为在限速考虑中没有包含IPv6子网，容易受到暴力破解攻击。这可能会导致攻击者可利用该漏洞绕过速率限制控制，比如Nextcloud brute-force protection。
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 Server Fixed in 19.0.11, 20.0.10, 21.0.2 -

II. Public POCs for CVE-2021-22915

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III. Intelligence Information for CVE-2021-22915

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Mailing List Discussions for CVE-2021-22915 (2)

Other References for CVE-2021-22915 (2)

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

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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-2021-22904 Ruby 安全漏洞
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 Server
Same vendor: n/a
Same weakness: CWE-307

V. Comments for CVE-2021-22915

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