CVE-2016-7136: Plone XSS
Summary
CVE-2016-7136: Plone XSS. Affects plone across 2 version ranges.
>= 4.0.0, <= 4.3.11
>= 5.0.0, <= 5.0.6
No fix is published. How to fix ↓
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Background
Plone CMS 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, intranets, and web applications. Plone is widely used and has a large community of developers and users. However, versions 5.x through 5.0.6 and 4.x through 4.3.11 of Plone are vulnerable to a cross-site scripting (XSS) attack.
Vulnerability Detail
The vulnerability in Plone CMS allows remote attackers to conduct cross-site scripting (XSS) attacks by exploiting a flaw in the z3c.form component. This can be achieved through a crafted GET request. XSS attacks can lead to the execution of malicious scripts in the context of a user's browser, potentially compromising sensitive information or performing unauthorized actions.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
If upgrading to a patched version is not immediately possible, a temporary workaround is to implement input validation and output encoding to prevent the execution of malicious scripts. This can be done by sanitizing user input and properly encoding output to ensure that any potentially dangerous content is rendered as plain text and not interpreted as executable code.
Conclusion
The Plone XSS vulnerability is a moderate-severity issue that affects versions 5.x through 5.0.6 and 4.x through 4.3.11 of Plone CMS. It allows remote attackers to conduct cross-site scripting attacks by exploiting a flaw in the z3c.form component. To mitigate the risk, users should upgrade to a patched version of Plone CMS or implement input validation and output encoding as a temporary workaround. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
Plone CMS 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, 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 the execution of arbitrary code in the context of a user's browser, potentially compromising sensitive information or performing unauthorized actions.
The Plone XSS vulnerability is caused by a flaw in the z3c.form component. Attackers can exploit this vulnerability by sending a specially crafted GET request that contains malicious script code. When the vulnerable Plone instance processes the request, it fails to properly sanitize and validate the input, allowing the script code to be executed in the context of a user's browser.
The Plone XSS vulnerability can allow attackers to steal sensitive information, such as login credentials or personal data, from users who visit a compromised website. It can also be used to perform unauthorized actions on behalf of the user, such as changing account settings or making fraudulent transactions.
To protect your Plone CMS installation from XSS attacks, it is important to keep the software up to date with the latest security patches. Regularly check for updates and apply them as soon as they become available. Additionally, implement input validation and output encoding to prevent the execution of malicious scripts. Sanitize user input and properly encode output to ensure that any potentially dangerous content is rendered as plain text and not interpreted as executable code.
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