CVE-2019-15484: Bolt Cross-site Scripting (XSS) in bolt/bolt
Summary
CVE-2019-15484: Bolt Cross-site Scripting (XSS) via an image's alt or title field. Affects bolt/bolt versions < 3.6.10. Fixed in 3.6.10. How to fix ↓
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Background
Bolt is a package available on Packagist that provides a content management system (CMS) for building websites. It offers various features and functionalities to help developers create and manage web content effectively. However, a vulnerability has been identified in Bolt versions prior to 3.6.10 that allows for Cross-site Scripting (XSS) attacks via an image's alt or title field. This vulnerability can potentially be exploited by attackers to inject malicious code into web pages and compromise the security and integrity of the affected websites.
Vulnerability Detail
The vulnerability in Bolt arises from insufficient input sanitization in the handling of image alt and title fields. Attackers can exploit this by injecting malicious scripts or HTML code into these fields, which will then be rendered and executed by the victim's browser. This can lead to various consequences, including unauthorized access to sensitive information, session hijacking, defacement of web pages, and the potential for further exploitation of the compromised website. The severity of this vulnerability has been assessed as MODERATE with a CVSS score of 6.1.
How To Fix
Minimum fixed version
3.6.10
This is the first release that contains the fix.
composer require bolt/bolt:3.6.10Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If upgrading to the latest version of Bolt is not immediately feasible, a temporary workaround can be implemented to mitigate the risk of XSS attacks. This can be achieved by manually sanitizing and validating the image alt and title fields before rendering them on web pages. Developers should use appropriate input validation and sanitization techniques, such as HTML entity encoding or using secure libraries, to prevent the execution of malicious code.
Conclusion
In conclusion, Bolt versions prior to 3.6.10 are vulnerable to Cross-site Scripting (XSS) attacks via image alt or title fields. It is crucial for developers to upgrade to the latest version of Bolt and implement proper input validation and sanitization techniques to mitigate the risk of exploitation. For further assistance and support in addressing this vulnerability, please reach out to DevNack.com.
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FAQ
Bolt is a content management system (CMS) that helps developers build and manage websites efficiently.
Cross-site Scripting (XSS) is a type of security vulnerability that allows attackers to inject malicious scripts or HTML code into web pages viewed by other users.
Attackers can exploit this vulnerability by injecting malicious code into image alt or title fields, which will then be executed by the victim's browser when the web page is loaded.
The consequences of this vulnerability include unauthorized access to sensitive information, session hijacking, defacement of web pages, and further exploitation of the compromised website.
To protect your website, it is recommended to upgrade to the latest version of Bolt (3.6.10 or later) and ensure proper input validation and sanitization of image alt and title fields.
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