CVE-2020-15513: Incorrect Access Control in typo3_forum
Summary
CVE-2020-15513: Incorrect access control in typo3_forum. Affects mittwald/typo3_forum versions < 1.2.1. Fixed in 1.2.1. How to fix ↓
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Background
The typo3_forum is an extension for TYPO3, a popular content management system. It provides forum functionality for TYPO3 websites, allowing users to create and manage discussion forums. The extension is available on Packagist and is commonly used by TYPO3 developers to enhance their websites with forum features. However, a vulnerability has been discovered in version 1.2.0 and earlier of the typo3_forum extension, which allows for incorrect access control.
Vulnerability Detail
The vulnerability in the typo3_forum extension arises from incorrect access control implementation. This means that unauthorized users may be able to access restricted functionality or perform actions that they should not have permission to do. This can lead to various security issues, such as unauthorized access to sensitive information, modification of forum content, or even complete compromise of the TYPO3 website. The vulnerability has been assigned a CVSS score of 5.3, indicating a moderate severity level.
How To Fix
Minimum fixed version
1.2.1
This is the first release that contains the fix.
composer require mittwald/typo3_forum:1.2.1Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If upgrading to the latest version is not immediately feasible, a temporary workaround can be implemented by manually modifying the code. Developers can review the source code of the typo3_forum extension and add additional access control checks to restrict unauthorized access. This can involve modifying the relevant controller files or adding custom access control middleware. However, it is important to note that this workaround is not a permanent solution and should be replaced with the official fix as soon as possible.
Conclusion
The incorrect access control vulnerability in the typo3_forum extension can potentially lead to unauthorized access and modification of forum functionality in TYPO3 websites. It is crucial for TYPO3 developers to upgrade to version 1.2.1 or later of the extension to fix the vulnerability. If immediate upgrade is not possible, a temporary workaround can be implemented by manually adding access control checks. For further support and assistance in vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for mittwald/typo3_forum →
FAQ
The vulnerability allows unauthorized users to access restricted functionality in the typo3_forum extension, which can lead to unauthorized access to sensitive information or modification of forum content.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your TYPO3 website is affected by this vulnerability. Simply upload your composer.lock file to the playground, and it will analyze the dependencies and alert you if any vulnerable versions are detected.
At the time of this advisory, there are no known public exploits specifically targeting this vulnerability. However, it is always recommended to apply security patches promptly to mitigate any potential risks.
There is no evidence of active exploitation of this vulnerability at the time of this advisory. However, it is still important to apply the necessary fixes to protect your TYPO3 website from potential attacks.
You can find more information about this vulnerability, including the technical details and the fix, in the GitHub Security Advisory: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2020/07/GHSA-57gr-jvqr-3hwm/GHSA-57gr-jvqr-3hwm.json
