Cross-Site Scripting Vulnerability in phpMyAdmin: CVE-2016-5099
Summary
UBUNTU-CVE-2016-5099: Cross-site scripting (XSS) vulnerability in phpMyAdmin 4.4.x before 4.4.15.6 and 4.6.x before 4.6.2 allows remote attackers to inject arbitrary web script or HTML via special characters that are mishandled during double... Affects phpmyadmin versions 4:4.0.10-1 – 4:4.0.9-1. No fix is published. How to fix ↓
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Background
phpMyAdmin is a widely-used open-source tool written in PHP, designed to handle the administration of MySQL databases through a web interface. It allows users to perform various database operations such as creating, modifying, and deleting databases and tables, executing SQL queries, and managing user permissions. Despite its robust functionality, phpMyAdmin has been susceptible to security vulnerabilities, including CVE-2016-5099, which exposes users to potential cross-site scripting (XSS) attacks.
Vulnerability Detail
CVE-2016-5099 is a cross-site scripting (XSS) vulnerability that affects phpMyAdmin versions 4.4.x prior to 4.4.15.6 and 4.6.x prior to 4.6.2. The vulnerability arises from improper handling of special characters during double URL decoding, allowing remote attackers to inject arbitrary web scripts or HTML. This can lead to unauthorized actions being performed on behalf of the user, data theft, or other malicious activities.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, users can implement input validation and sanitization on the web application level to mitigate the risk of XSS attacks. This includes encoding special characters in user inputs and ensuring that user-generated content is properly escaped before rendering it on the web page.
Conclusion
CVE-2016-5099 is a significant vulnerability in phpMyAdmin that poses a risk of cross-site scripting attacks. Users are encouraged to update their phpMyAdmin installations to the latest patched versions to mitigate this risk. Additionally, implementing security best practices can further protect applications from XSS vulnerabilities.
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FAQ
CVE-2016-5099 is a cross-site scripting vulnerability in phpMyAdmin that allows attackers to inject malicious scripts via improperly handled special characters.
The vulnerability affects phpMyAdmin versions 4.4.x before 4.4.15.6 and 4.6.x before 4.6.2.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without requiring any signup.
If exploited, this vulnerability can allow attackers to perform unauthorized actions, steal sensitive data, or compromise user accounts.
Implement input validation, output encoding, and use security libraries to sanitize user inputs to protect against XSS attacks.
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