CVE-2021-20112: XSS
First published: Thu Jul 29 2021(Updated: )
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.
Credit: vulnreport@tenable.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Tecnick Tcexam | <=14.8.1 |
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Reference Links
Frequently Asked Questions
What is the vulnerability CVE-2021-20112?
The vulnerability CVE-2021-20112 is a stored cross-site scripting vulnerability in TCExam <= 14.8.1.
How does the vulnerability CVE-2021-20112 work?
The vulnerability CVE-2021-20112 allows an attacker to upload a malicious JavaScript payload via tce_select_mediafile.php with a file name beginning with a period, which will be rendered as text/html and executed when accessed by a victim.
What is the severity of the vulnerability CVE-2021-20112?
The severity of the vulnerability CVE-2021-20112 is medium with a CVSS score of 5.4.
Which software versions are affected by CVE-2021-20112?
The TCExam versions up to and inclusive of 14.8.1 are affected by CVE-2021-20112.
How can the vulnerability CVE-2021-20112 be fixed?
To fix the vulnerability CVE-2021-20112, it is recommended to update TCExam to a version higher than 14.8.1.
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- version/tecnick tcexam/14.8.1