CVE-2020-11065: Cross-Site Scripting in TYPO3 CMS Link Handling
Summary
CVE-2020-11065: Cross-Site Scripting in TYPO3 CMS Link Handling. Affects typo3/cms-core across 2 version ranges.
>= 9.0.0, < 9.5.17
>= 10.0.0, < 10.4.2
Fixed in 9.5.17 or 10.4.2, depending on the release line you run. How to fix ↓
Also tracked for
- typo3 · Bitnami
The same CVE-2020-11065 is tracked separately for each ecosystem and vendor. Its fix information is the same; the package and affected versions differ.
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
TYPO3 CMS is an open-source content management system used for building and managing websites. It provides various functionalities for creating and managing links, including the 'typolink' functionality. This vulnerability affects TYPO3 versions 9.5.12 to 9.5.16 and 10.2.0 to 10.4.1. The vulnerability allows for cross-site scripting attacks, where properties assigned as HTML attributes are not properly parsed. This can lead to the execution of malicious scripts on the user's browser, potentially compromising sensitive information or performing unauthorized actions.
Vulnerability Detail
The vulnerability arises from the incorrect parsing of HTML attributes in link tags generated by the 'typolink' functionality in TYPO3 CMS. This allows an attacker to inject and execute arbitrary scripts on the user's browser. The impact of this vulnerability can range from stealing sensitive information, such as login credentials or personal data, to performing unauthorized actions on behalf of the user. The vulnerability has a CVSS score of 5.4, indicating a moderate severity level.
How To Fix
Fixed versions by release line
The minimum fixed version depends on the release line you run.
-
>= 9.0.0, < 9.5.179.5.17composer require typo3/cms-core:9.5.17 -
>= 10.0.0, < 10.4.210.4.2composer require typo3/cms-core:10.4.2
Tip — Not sure which release line you're on? Vulert can find the fix for the version you are using. Scan free →
Workaround
There is no known workaround for this vulnerability. It is essential to update to the fixed versions of TYPO3 CMS to address the issue.
Conclusion
Cross-Site Scripting in TYPO3 CMS Link Handling (CVE-2020-11065) is a moderate severity vulnerability that allows for the execution of arbitrary scripts on the user's browser. It affects TYPO3 versions 9.5.12 to 9.5.16 and 10.2.0 to 10.4.1. To mitigate this vulnerability, it is essential to update to TYPO3 versions 9.5.17 or 10.4.2. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for typo3/cms-core →
FAQ
TYPO3 CMS is an open-source content management system used for building and managing websites. It provides a wide range of features and functionalities for creating and maintaining web content.
Cross-site scripting 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, perform unauthorized actions, or deface websites.
This vulnerability affects TYPO3 CMS versions 9.5.12 to 9.5.16 and 10.2.0 to 10.4.1. It allows attackers to inject and execute arbitrary scripts on the user's browser, potentially compromising sensitive information or performing unauthorized actions.
The impact of this vulnerability can range from stealing sensitive information, such as login credentials or personal data, to performing unauthorized actions on behalf of the user.
To protect your TYPO3 CMS installation, it is crucial to update to the fixed versions (9.5.17 or 10.4.2) that address this vulnerability. Regularly applying security updates and following best practices for web application security can also help mitigate the risk of such vulnerabilities.
References
Related vulnerabilities
Recent vulnerabilities recorded for typo3/cms-core.
