CVE-2020-8236
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 19.0.1中存在授权问题漏洞，该漏洞源于错误配置使用户感到无密码的WebAuthn也是双重验证。
Possible ATT&CK Techniques 1 AI
T1528 · Steal Application Access Token
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I. Basic Information for CVE-2020-8236
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A wrong configuration in Nextcloud Server 19.0.1 incorrectly made the user feel the passwordless WebAuthn is also a two factor verification by asking for the PIN of the passwordless WebAuthn but not verifying it.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Nextcloud 授权问题漏洞
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 Server 19.0.1中存在授权问题漏洞，该漏洞源于错误配置使用户感到无密码的WebAuthn也是双重验证。
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 Server | 19.0.2 | - |
|
II. Public POCs for CVE-2020-8236
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2020-8236 (2)
-
https://nextcloud.com/security/advisory/?id=NC-SA-2020-037 x_refsource_MISC
-
https://hackerone.com/reports/924393 x_refsource_MISC
Same Patch Batch · n/a · 2020-10-30 · 12 CVEs total
| CVE-2020-7759 | 6.5 MEDIUM | SQL Injection |
| CVE-2020-7760 | 5.3 MEDIUM | Regular Expression Denial of Service (ReDoS) |
| CVE-2020-28031 | Eramba 注入漏洞 | |
| CVE-2020-28030 | Wireshark 资源管理错误漏洞 | |
| CVE-2020-8183 | Nextcloud 安全漏洞 | |
| CVE-2020-8173 | Nextcloud 加密问题漏洞 | |
| CVE-2020-7373 | vBulletin 命令注入漏洞 | |
| CVE-2020-15914 | Electronic Arts Inc Electronic Arts Origin Client 跨站脚本漏洞 | |
| CVE-2020-27708 | Electronic Arts Inc Electronic Arts Origin Client 安全漏洞 | |
| CVE-2020-6014 | Check Point Endpoint Security Client 代码问题漏洞 | |
| CVE-2020-28002 | SonarSource SonarQube 授权问题漏洞 |
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V. Comments for CVE-2020-8236
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