CVE-2021-33513: Cross-site scripting in Plone
Summary
CVE-2021-33513: Cross-site scripting in Plone. Affects plone versions < 5.2.4. No fix is published. How to fix ↓
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Background
Plone is a content management system (CMS) built on top of the Zope application server. It provides an easy-to-use interface for creating and managing websites, intranets, and web applications. Plone is written in Python and is widely used for its robustness, security, and extensibility. However, Plone versions up to 5.2.4 are vulnerable to a cross-site scripting (XSS) attack through the inline_diff methods in Products.CMFDiffTool.
Vulnerability Detail
The vulnerability allows an attacker to inject malicious scripts into Plone's web pages, which are then executed by the victim's browser. This can lead to various security issues, such as stealing sensitive information, session hijacking, or performing unauthorized actions on behalf of the victim. The vulnerability has a CVSS score of 5.4, indicating a moderate severity level. The CWE-79 category is assigned to this vulnerability, which corresponds to Cross-Site Scripting (XSS) weaknesses.
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, a temporary workaround is to disable the inline_diff feature in Products.CMFDiffTool. This can be done by modifying the Plone configuration or disabling the related add-on. However, this workaround should only be considered as a temporary measure, and upgrading to the latest version is strongly recommended for long-term security.
Conclusion
Plone versions up to 5.2.4 are vulnerable to a cross-site scripting (XSS) attack. To mitigate this vulnerability, it is crucial to upgrade Plone to version 5.2.5 or later. Disabling the inline_diff feature in Products.CMFDiffTool can serve as a temporary workaround. For further assistance and support in vulnerability remediation, please contact DevNack.com.
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FAQ
Plone is a popular content management system (CMS) built on top of the Zope application server. It provides a user-friendly interface for creating and managing websites, intranets, and web applications.
Cross-site scripting (XSS) is a type of security vulnerability that allows attackers to inject malicious scripts into web pages viewed by other users. This can lead to various security issues, such as stealing sensitive information or performing unauthorized actions on behalf of the victim.
The vulnerability in Plone allows attackers to inject malicious scripts into web pages, potentially leading to the theft of sensitive information, session hijacking, or unauthorized actions on behalf of the victim.
To fix this vulnerability, it is recommended to upgrade Plone to version 5.2.5 or later. This update includes security patches that address the XSS vulnerability.
Yes, if upgrading to the latest version is not immediately feasible, you can disable the inline_diff feature in Products.CMFDiffTool as a temporary workaround. However, upgrading to the latest version is strongly recommended for long-term security.
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