CVE-2017-15284: OctoberCMS Cross-Site Scripting Vulnerability
Summary
CVE-2017-15284: OctoberCMS Cross-Site Scripting. Affects october/rain versions < 1.0.426. Fixed in 1.0.426. How to fix ↓
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Background
OctoberCMS is a content management system built on the Laravel PHP framework, designed for developers and users to create and manage websites easily. It offers a range of features including a user-friendly interface, extensibility through plugins, and a robust templating engine. However, it is susceptible to security vulnerabilities, such as Cross-Site Scripting (XSS), which can compromise user accounts and data integrity.
Vulnerability Detail
The vulnerability identified as CVE-2017-15284 exists in OctoberCMS version 1.0.425, where a least privileged user can upload an SVG file containing malicious JavaScript code as their profile Avatar. When an Admin user views this profile, the malicious code executes in the context of the Admin account, potentially allowing attackers to perform unauthorized actions or steal sensitive information. This vulnerability arises from improper handling of user-uploaded files and insufficient validation of file content.
How To Fix
Minimum fixed version
1.0.426
This is the first release that contains the fix.
composer require october/rain:1.0.426Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, restrict file uploads to only allow safe file types (e.g., images like JPG, PNG) and implement server-side validation to sanitize any uploaded files before they are processed or displayed.
Conclusion
The CVE-2017-15284 vulnerability in OctoberCMS poses a significant risk due to its potential for Cross-Site Scripting attacks. By updating to the latest version and implementing recommended workarounds, users can protect their applications from exploitation. Utilizing tools like Vulert can further enhance security by providing real-time monitoring for vulnerabilities.
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FAQ
XSS is a security vulnerability that allows attackers to inject malicious scripts into web pages viewed by other users, potentially compromising their accounts and data.
You can check if your application is affected by using Vulert, which monitors open-source vulnerabilities in real-time. Visit Vulert Scanner to analyze your composer.lock file without needing to sign up.
If exploited, this vulnerability can allow attackers to execute arbitrary JavaScript code in the context of an Admin user, leading to unauthorized actions and data breaches.
Yes, after updating to version 1.0.426 or later, the vulnerability will be fixed, making your installation safer against this specific attack vector.
If an immediate update is not possible, implement strict file upload restrictions and sanitize any uploaded content to mitigate the risk until you can apply the patch.
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