CVE-2019-17433: z-song laravel-admin XSS via Slug or Name on Roles Screen
Summary
CVE-2019-17433: z-song laravel-admin XSS via the Slug or Name on the Roles screen. Affects encore/laravel-admin versions 1.7.3. No fix is published. How to fix ↓
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Background
The z-song laravel-admin package, version 1.7.3, is an open-source admin panel builder for Laravel applications. It provides a user-friendly interface for managing various aspects of an application, including roles and permissions. However, this version of laravel-admin is vulnerable to a cross-site scripting (XSS) attack when handling the Slug or Name fields on the Roles screen. This vulnerability can be exploited by an attacker to inject malicious code into the application, potentially leading to unauthorized access, data theft, or other malicious activities.
Vulnerability Detail
The XSS vulnerability in z-song laravel-admin 1.7.3 arises from improper handling of user input on the Roles screen. When the Slug or Name fields are not properly sanitized, an attacker can inject malicious JavaScript code that will be executed by the victim's browser. This can result in the attacker gaining unauthorized access to sensitive information, manipulating user data, or performing actions on behalf of the victim. The severity of this vulnerability is considered moderate, with a CVSS score of 4.8.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, developers can manually sanitize and validate the Slug and Name fields on the Roles screen to prevent XSS attacks. This can be done by implementing server-side input validation and output encoding. Here is an example of how to sanitize user input in PHP:
$slug = htmlspecialchars($_POST['slug']);
$name = htmlspecialchars($_POST['name']);
By using the htmlspecialchars function, special characters in the input will be converted to their HTML entities, preventing them from being interpreted as code by the browser.
Conclusion
The z-song laravel-admin package, version 1.7.3, is vulnerable to a cross-site scripting (XSS) attack when handling the Slug or Name fields on the Roles screen. This can lead to unauthorized access, data theft, or other malicious activities. It is crucial to upgrade to a patched version of the package and implement proper input validation and output encoding techniques to mitigate the risk of this vulnerability. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
This vulnerability allows an attacker to inject malicious code into the application, potentially leading to unauthorized access, data theft, or other malicious activities.
You can use Vulert's playground (https://vulert.com/scanner) to check if your application is affected by this vulnerability. Vulert analyzes your composer.lock file and provides real-time alerts for open-source vulnerabilities.
Yes, the maintainers of z-song laravel-admin have released a fix for this vulnerability in a later version. It is recommended to upgrade to the latest patched version of the package.
To mitigate the risk of this vulnerability, ensure that user input is properly sanitized and validated before using it in any context that could be vulnerable to XSS attacks. Implement server-side input validation and output encoding techniques to prevent malicious code injection.
For more information about this vulnerability, you can refer to the GitHub Security Advisory database entry: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/05/GHSA-fcmh-7492-g4q9/GHSA-fcmh-7492-g4q9.json
References
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