CVE-2011-4632: Typo3 XSS Vulnerabilities
Summary
CVE-2011-4632: Typo3 XSS Vulnerabilities. Affects typo3/cms across 3 version ranges.
< 4.3.12
>= 4.4.0, < 4.4.9
>= 4.5.0, < 4.5.4
Fixed in 4.3.12, 4.4.9 or 4.5.4, depending on the release line you run. How to fix ↓
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Background
Typo3 is an open-source content management system (CMS) that allows users to create and manage websites. It is widely used for its flexibility, extensibility, and user-friendly interface. However, versions before 4.3.12, 4.4.x before 4.4.9, and 4.5.x before 4.5.4 are vulnerable to Cross-site Scripting (XSS) attacks. This vulnerability enables remote attackers to inject arbitrary web script or HTML via the tcemain flash message.
Vulnerability Detail
The XSS vulnerability in Typo3 allows attackers to insert malicious code into web pages viewed by users. This can lead to various security risks, such as session hijacking, data theft, defacement, and the execution of arbitrary code. The vulnerability originates from improper input sanitization and validation in the tcemain flash message functionality. By exploiting this vulnerability, an attacker can bypass security measures and inject malicious code that will be executed by the victim's browser.
How To Fix
Fixed versions by release line
The minimum fixed version depends on the release line you run.
-
< 4.3.124.3.12composer require typo3/cms:4.3.12 -
>= 4.4.0, < 4.4.94.4.9composer require typo3/cms:4.4.9 -
>= 4.5.0, < 4.5.44.5.4composer require typo3/cms:4.5.4
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Workaround
As a temporary workaround, developers can disable the tcemain flash message functionality or implement custom input sanitization and validation filters to mitigate the risk of XSS attacks. Here is an example of how to disable the flash message functionality in Typo3:
- Open the Typo3 configuration file.
- Locate the configuration option for the tcemain flash message.
- Set the option to 'false' or comment it out.
- Save the configuration file and restart the Typo3 application.
Conclusion
The XSS vulnerabilities in Typo3 versions before 4.3.12, 4.4.x before 4.4.9, and 4.5.x before 4.5.4 pose a significant security risk. It is crucial for users to upgrade to the latest patched versions and implement proper input sanitization and validation techniques to prevent XSS attacks. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
Cross-site Scripting (XSS) is a type of security vulnerability that allows attackers to inject malicious scripts into web pages viewed by users. These scripts can be used to steal sensitive information, manipulate website content, or perform other malicious actions.
An attacker can exploit this XSS vulnerability by crafting a malicious tcemain flash message that contains JavaScript or HTML code. When a user views a page with the injected flash message, the malicious code will be executed by their browser, allowing the attacker to perform various actions.
The potential consequences of this vulnerability include session hijacking, data theft, defacement of websites, and the execution of arbitrary code. An attacker can use the injected code to steal sensitive information, manipulate website content, or perform unauthorized actions on behalf of the victim.
No, only versions before 4.3.12, 4.4.x before 4.4.9, and 4.5.x before 4.5.4 are affected by this XSS vulnerability. It is recommended to upgrade to the latest patched versions to mitigate the risk.
Yes, the vulnerability can be fixed by upgrading to Typo3 versions 4.3.12, 4.4.9, or 4.5.4. These versions include patches that address the XSS vulnerability. It is important to keep the software up to date to ensure the security of your Typo3 installation.
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