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CVE-2021-21403— Authentication Bypass by Primary Weakness in github.com/kongchuanhujiao/server

CVSS 7.5 · High EPSS 1.36% · P69

Possible ATT&CK Techniques 1AI

T1078 · Valid Accounts
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I. Basic Information for CVE-2021-21403

Vulnerability Information
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Vulnerability Title
Authentication Bypass by Primary Weakness in github.com/kongchuanhujiao/server
Source: CVE Program / CVE List V5
Vulnerability Description
In github.com/kongchuanhujiao/server before version 1.3.21 there is an authentication Bypass by Primary Weakness vulnerability. All users are impacted. This is fixed in version 1.3.21.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用基本弱点进行的认证绕过
Source: CVE Program / CVE List V5
Vulnerability Title
qianjunakasumi kongchuanhujiao 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
qianjunakasumi kongchuanhujiao是 （qianjunakasumi）开源的一个应用程序。一个在线教学问答统计深度学习分析系统。 github.com/kongchuanhujiao/server before version 1.3.21 存在安全漏洞，该漏洞源于一个认证绕过。
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

VendorProductAffected VersionsCPESubscribe
kongchuanhujiaoserver < 1.3.21 -

II. Public POCs for CVE-2021-21403

#POC DescriptionSource LinkShenlong Link
1Jellyfin系统任意文件读取漏洞批量扫描验证脚本。https://github.com/5l1v3r1/CVE-2021-21403POC Details
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III. Intelligence Information for CVE-2021-21403

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Patches & Fixes for CVE-2021-21403 (1)

Vendor Advisories for CVE-2021-21403 (1)

IV. Related Vulnerabilities

Same product: server
Same weakness: CWE-305

V. Comments for CVE-2021-21403

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