CVE-2017-9071: MODX Revolution XSS via HTTP Host Header Vulnerability
Summary
CVE-2017-9071: MODX Revolution XSS via HTTP Host header. Affects modx/revolution versions < 2.5.7. Fixed in 2.5.7. How to fix ↓
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Background
MODX Revolution is an open-source content management system (CMS) that allows users to create and manage websites with ease. It is known for its flexibility, scalability, and user-friendly interface. However, prior to version 2.5.7, MODX Revolution is vulnerable to a cross-site scripting (XSS) attack through the HTTP Host header, which can be exploited in conjunction with other vulnerabilities such as cache poisoning.
Vulnerability Detail
The vulnerability arises from the improper handling of the HTTP Host header in MODX Revolution versions before 2.5.7. An attacker can inject a malicious payload into the Host header of a request, potentially leading to XSS attacks. This could allow the attacker to execute arbitrary scripts in the context of the user's browser, compromising user data and session integrity. The risk is heightened when combined with cache poisoning, making it a moderate threat to users of the affected versions.
How To Fix
Minimum fixed version
2.5.7
This is the first release that contains the fix.
composer require modx/revolution:2.5.7Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If you cannot immediately update to the patched version, consider implementing input validation on the server-side to sanitize the HTTP Host header. This can help mitigate the risk of XSS attacks until you can apply the official patch.
Conclusion
The CVE-2017-9071 vulnerability in MODX Revolution poses a moderate risk due to its potential for XSS attacks via the HTTP Host header. Users are strongly advised to update to version 2.5.7 or later to mitigate this risk. Additionally, utilizing tools like Vulert can help keep your applications secure by monitoring for vulnerabilities.
See every vulnerability recorded for modx/revolution →
FAQ
CVE-2017-9071 is a vulnerability in MODX Revolution that allows for cross-site scripting (XSS) attacks via the HTTP Host header.
If you are using a version of MODX Revolution prior to 2.5.7, your installation is vulnerable. You can check your version in the admin panel or by using the Vulert playground.
An attacker could exploit this vulnerability to execute malicious scripts in a user's browser, potentially leading to data theft or session hijacking.
Yes, you can use Vulert to monitor and alert you in real-time for open-source vulnerabilities in your software without needing access to the code or installation.
Implement server-side input validation to sanitize the HTTP Host header as a temporary workaround until you can update to the patched version.
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