Insecure Unserialize in TYPO3 Backend
Summary
GHSA-c7rj-92xr-wprg: Insecure Unserialize in TYPO3 Backend. Affects typo3/cms across 3 version ranges.
>= 6.2.0, < 6.2.29
>= 7.6.0, < 7.6.13
>= 8.0.0, < 8.4.1
Fixed in 6.2.29, 7.6.13 or 8.4.1, depending on the release line you run. How to fix ↓
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Background
TYPO3 CMS is an open-source content management system that allows users to create and manage websites. It provides a backend interface for administrators to perform various tasks such as content editing, user management, and system configuration. However, a vulnerability has been discovered in the TYPO3 backend that can be exploited through insecure unserialize operations. This vulnerability requires a valid backend user account to exploit.
Vulnerability Detail
The suggest wizard in TYPO3 backend fails to properly validate incoming data, making it susceptible to insecure unserialize operations. This vulnerability can be exploited by an attacker with a valid backend user account. By crafting malicious serialized data, an attacker can execute arbitrary code or perform unauthorized actions within the TYPO3 backend. The impact of this vulnerability can range from unauthorized access to sensitive information to complete compromise of the TYPO3 installation.
How To Fix
Fixed versions by release line
The minimum fixed version depends on the release line you run.
-
>= 6.2.0, < 6.2.296.2.29composer require typo3/cms:6.2.29 -
>= 7.6.0, < 7.6.137.6.13composer require typo3/cms:7.6.13 -
>= 8.0.0, < 8.4.18.4.1composer require typo3/cms:8.4.1
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Workaround
There is no known workaround for this vulnerability. It is crucial to update TYPO3 CMS to the fixed versions mentioned above to mitigate the risk of exploitation.
Conclusion
Insecure unserialize vulnerability in the TYPO3 backend can lead to unauthorized access, information disclosure, and potential compromise of the entire TYPO3 installation. It is highly recommended to update TYPO3 CMS to the fixed versions mentioned above to mitigate the risk. For further support and assistance in vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for typo3/cms →
FAQ
TYPO3 CMS is an open-source content management system used for creating and managing websites.
The suggest wizard is a feature in the TYPO3 backend that provides suggestions or autocomplete functionality for certain fields, making it easier for administrators to input data.
An attacker with a valid backend user account can exploit this vulnerability by crafting malicious serialized data and submitting it through the suggest wizard. When the backend processes the data, the insecure unserialize operation can be triggered, allowing the attacker to execute arbitrary code or perform unauthorized actions.
The consequences of this vulnerability can vary depending on the attacker's intentions. They can range from unauthorized access to sensitive information within the TYPO3 backend to complete compromise of the TYPO3 installation, allowing the attacker to take control of the website and perform malicious activities.
To protect your TYPO3 installation, it is crucial to update TYPO3 CMS to the fixed versions mentioned above. Regularly applying security updates and following best practices for secure configuration can also help mitigate the risk of exploitation.
References
Related vulnerabilities
Recent vulnerabilities recorded for typo3/cms.
