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CVE-2021-42335— Huachu Digital Technology Co.,Ltd. Easytest - Stored XSS

Quick assessment

Affected
Huachu Digital Technology Co.,Ltd. Easytest
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.

骅巨数位科技 Easytest是中国骅巨数位科技公司的一个线上学习测验平台。 Easytest 存在跨站脚本漏洞，该漏洞源于online learning platform Easytest bulletin board management 功能不过滤特殊字符。 获得用户权限后，远程攻击者可以注入 JavaScript 并执行存储型 XSS 攻击。

CVSS 5.4 · Medium EPSS 0.59% · P45
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I. Basic Information for CVE-2021-42335

Vulnerability Information
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Vulnerability Title
Huachu Digital Technology Co.,Ltd. Easytest - Stored XSS
Source: CVE Program / CVE List V5
Vulnerability Description
Easytest bulletin board management function of online learning platform does not filter special characters. After obtaining a user’s privilege, remote attackers can inject JavaScript and execute stored XSS attack.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Easytest 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
骅巨数位科技 Easytest是中国骅巨数位科技公司的一个线上学习测验平台。 Easytest 存在跨站脚本漏洞，该漏洞源于online learning platform Easytest bulletin board management 功能不过滤特殊字符。 获得用户权限后，远程攻击者可以注入 JavaScript 并执行存储型 XSS 攻击。
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
Huachu Digital Technology Co.,Ltd. Easytest 1705 -

II. Public POCs for CVE-2021-42335

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III. Intelligence Information for CVE-2021-42335

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Other References for CVE-2021-42335 (1)

Same Patch Batch · Huachu Digital Technology Co.,Ltd. · 2021-10-15 · 4 CVEs total

CVE-2021-42333 8.8 HIGH Huachu Digital Technology Co.,Ltd. Easytest - SQL Injection-1
CVE-2021-42334 8.8 HIGH Huachu Digital Technology Co.,Ltd. Easytest - SQL Injection-2
CVE-2021-42336 4.3 MEDIUM Huachu Digital Technology Co.,Ltd. Easytest - Improper Authorization

IV. Related Vulnerabilities

Same product: Easytest
Same vendor: Huachu Digital Technology Co.,Ltd.
Same weakness: CWE-79

V. Comments for CVE-2021-42335

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