CVE-2019-16725: Joomla! XSS in Default Templates
Summary
CVE-2019-16725: Joomla! XSS in Default Templates. Affects joomla/joomla-cms versions >= 3.0.0, < 3.9.12. Fixed in 3.9.12. How to fix ↓
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Background
Joomla! is an open-source content management system (CMS) that allows users to build websites and online applications. It provides a wide range of features and functionalities, making it a popular choice for website development. However, Joomla! versions 3.x before 3.9.12 are vulnerable to a cross-site scripting (XSS) attack. This vulnerability specifically affects the default templates used in Joomla! websites.
Vulnerability Detail
The vulnerability arises due to inadequate escaping of user input in the logo parameter of the default templates. This allows an attacker to inject malicious code into the website, which can be executed in the context of other users visiting the site. The impact of this vulnerability can range from unauthorized data access to complete website compromise. It is important to note that this vulnerability has a CVSS score of 6.1, indicating a moderate severity level.
How To Fix
Minimum fixed version
3.9.12
This is the first release that contains the fix.
composer require joomla/joomla-cms:3.9.12Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If updating Joomla! is not immediately feasible, a temporary workaround is to disable the logo parameter in the default templates. This can be done by modifying the template files and removing any references to the logo parameter. However, this is not a permanent solution and updating to the latest version is still highly recommended.
Conclusion
In conclusion, Joomla! versions 3.x before 3.9.12 are vulnerable to a cross-site scripting (XSS) attack in the default templates. It is crucial for website administrators to update Joomla! to the latest version and apply any available security patches. Disabling the logo parameter in the default templates can serve as a temporary workaround. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
Joomla! is an open-source content management system (CMS) used for building websites and online applications.
Cross-site scripting (XSS) is a type of security vulnerability that allows attackers to inject malicious scripts into web pages viewed by other users.
The vulnerability allows attackers to execute arbitrary code on Joomla! websites, potentially leading to unauthorized data access or complete website compromise.
To fix this vulnerability, update Joomla! to version 3.9.12 or later. Alternatively, disable the logo parameter in the default templates as a temporary workaround.
Yes, this vulnerability has a CVSS score of 6.1, indicating a moderate severity level.
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