CVE-2020-7937: XSS Vulnerability in Plone
Summary
CVE-2020-7937: Plone cross site scripting (XSS). Affects plone versions >= 5.0, <= 5.2.1. No fix is published. How to fix ↓
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Background
Plone is an open-source content management system built on top of the Zope application server. It provides a robust and flexible platform for creating and managing websites. The vulnerability affects Plone versions 5.0 through 5.2.1. Plone allows users with a certain privilege level to insert JavaScript code in the title field, which will be executed when other users access the site.
Vulnerability Detail
The XSS vulnerability in Plone allows privileged users to inject malicious JavaScript code into the title field. When other users access the site and view the affected page, the injected code will be executed in their browsers. This can lead to various security risks, such as stealing sensitive information, session hijacking, or performing unauthorized actions on behalf of the user. The vulnerability was identified on January 23, 2020, and assigned CVE-2020-7937.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
If upgrading to the latest version is not immediately feasible, users can mitigate the risk by restricting access to the title field for users with the privilege level that can exploit the vulnerability. This can be done by modifying the permissions settings in the Plone administration interface or by customizing the code to enforce stricter input validation and sanitization for the title field.
Conclusion
The XSS vulnerability in Plone allows privileged users to execute arbitrary JavaScript code on other users' browsers. To mitigate this risk, it is recommended to upgrade to Plone version 5.2.2 or later. If immediate upgrade is not possible, access to the title field should be restricted for users with the necessary privilege level. For further assistance or support in vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability allows privileged users to execute arbitrary JavaScript code in the context of other users, potentially leading to unauthorized actions, data theft, or session hijacking.
Plone versions 5.0 through 5.2.1 are affected by this vulnerability. Users who have enabled the affected versions and have users with the necessary privilege level are at risk.
At the time of this advisory, there are no known public exploits targeting this vulnerability. However, it is important to apply the patch or upgrade to the latest version to prevent any potential exploitation.
Yes, users can restrict access to the title field for users with the privilege level that can exploit the vulnerability. This can be done through permissions settings or custom code modifications.
You can use the Vulert Playground at Vulert Scanner to check if your Plone installation is affected by this vulnerability. Simply enter your Pipfile.lock and it will provide real-time monitoring and alerts for open-source vulnerabilities.
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