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CVE-2021-20112

Quick assessment

Affected
n/a TCExam
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.

Tecnick.com TCExam是英国Tecnick.com公司的一套基于Web的开源电子考试系统。该系统主要用于在线考试等。 TCExam 存在跨站脚本漏洞，该漏洞源于tce_select_mediafile.php中对用户提供的数据验证不足。远程认证的攻击者可利用该漏洞在受影响用户的浏览器中注入并执行任意的HTML和脚本代码。

AI Predicted 5.4 Difficulty: Easy EPSS 0.63% · P48
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I. Basic Information for CVE-2021-20112

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A stored cross-site scripting vulnerability exists in TCExam <= 14.8.1. Valid files uploaded via tce_select_mediafile.php with a filename beggining with a period will be rendered as text/html. An attacker with access to tce_select_mediafile.php could upload a malicious javascript payload which would be triggered when another user views the file.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Tecnick.com TCExam 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tecnick.com TCExam是英国Tecnick.com公司的一套基于Web的开源电子考试系统。该系统主要用于在线考试等。 TCExam 存在跨站脚本漏洞，该漏洞源于tce_select_mediafile.php中对用户提供的数据验证不足。远程认证的攻击者可利用该漏洞在受影响用户的浏览器中注入并执行任意的HTML和脚本代码。
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
- TCExam 14.8.1 -

II. Public POCs for CVE-2021-20112

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2021-20112

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Other References for CVE-2021-20112 (1)

Same Patch Batch · n/a · 2021-07-29 · 18 CVEs total

CVE-2021-23418 6.3 MEDIUM XML External Entity (XXE) Injection
CVE-2020-18158 HuCart 跨站脚本漏洞
CVE-2021-31799 Ruby 命令注入漏洞
CVE-2021-30124 Microsoft Visual Studio Code 命令注入漏洞
CVE-2021-36386 Fetchmail 资源管理错误漏洞
CVE-2020-22761 Flatpress 跨站请求伪造漏洞
CVE-2020-22765 Vinades NukeViet 跨站脚本漏洞
CVE-2020-21808 Vinades NukeViet SQL注入漏洞
CVE-2020-21809 Vinades NukeViet SQL注入漏洞
CVE-2020-18157 Metinfo 跨站请求伪造漏洞
CVE-2021-20114 Tecnick.com TCExam 信息泄露漏洞
CVE-2020-18175 Metinfo MetInfo SQL注入漏洞
CVE-2021-36621 SourceCodester Online Covid Vaccination Scheduler System SQL注入漏洞
CVE-2021-36624 SourceCodester Phone Shop Sales Managements System SQL注入漏洞
CVE-2021-37144 CSZ CMS 安全漏洞
CVE-2021-20111 Tecnick.com TCExam 跨站脚本漏洞
CVE-2021-20113 Tecnick.com TCExam 信息泄露漏洞

IV. Related Vulnerabilities

Same product: TCExam
Same vendor: n/a

V. Comments for CVE-2021-20112

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