CVE-2021-33508 : Security Advisory and Response
Learn about CVE-2021-33508, a Plone XSS vulnerability allowing malicious JavaScript execution. Discover impact, affected versions, and mitigation steps.
Plone through 5.2.4 allows XSS via a full name that is mishandled during rendering of the ownership tab of a content item.
Understanding CVE-2021-33508
This CVE describes a cross-site scripting (XSS) vulnerability in Plone up to version 5.2.4.
What is CVE-2021-33508?
CVE-2021-33508 highlights the security issue in Plone where XSS attacks can be carried out through a full name that is incorrectly processed when displaying the ownership tab of a content item.
The Impact of CVE-2021-33508
Exploitation of this vulnerability could lead to unauthorized access to sensitive data, cookie theft, or initiation of malicious actions on behalf of authenticated users.
Technical Details of CVE-2021-33508
This section provides specific technical details about the vulnerability.
Vulnerability Description
The vulnerability allows malicious actors to inject and execute arbitrary JavaScript code by manipulating the full name field, which is not properly sanitized or validated during the rendering of the ownership tab within Plone content.
Affected Systems and Versions
Plone versions up to 5.2.4 are affected by this XSS vulnerability.
Exploitation Mechanism
Attackers can exploit this issue by crafting a specially designed full name that includes malicious JavaScript code, which gets executed when the ownership tab is rendered in Plone.
Mitigation and Prevention
It is crucial to take immediate action to mitigate the risks associated with CVE-2021-33508.
Immediate Steps to Take
Users are recommended to apply security patches released by Plone promptly to address this vulnerability and prevent potential exploitation.
Long-Term Security Practices
Implementing secure coding practices, input validation mechanisms, and routine security assessments can help in preventing XSS vulnerabilities like CVE-2021-33508.
Patching and Updates
Regularly updating Plone to the latest secure versions and staying informed about security advisories are essential for safeguarding systems against known vulnerabilities.