CVE-2023-30838: Possible XSS injection through Validate::isCleanHTML method
Impact ValidateCore::isCleanHTML() method of Prestashop misses hijickable events which can lead to XSS injection, allowed by the presence of pre-setup @keyframes methods.
This XSS which hijacks HTML attributes will be triggered without any interaction of the visitor/administrator which makes it as dangerous as a trivial XSS.
Contrary to most XSS which target HTML attributes and which are triggered without user interaction (such as onload / onerror which suffer from a very limited scope), this one can hijack every HTML element, which increases the danger due to a complete HTML elements scope.
Patches The patch will be on PS 8.0.4 and PS 1.7.8.9
References
Other sources
Possible XSS injection through Validate::isCleanHTML method
— Packagist
PrestaShop is an Open Source e-commerce web application. Prior to versions 8.0.4 and 1.7.8.9, the ValidateCore::isCleanHTML() method of Prestashop misses hijackable events which can lead to cross-site scripting (XSS) injection, allowed by the presence of pre-setup @keyframes methods. This XSS, which hijacks HTML attributes, can be triggered without any interaction by the visitor/administrator, which makes it as dangerous as a trivial XSS attack. Contrary to other attacks which target HTML attributes and are triggered without user interaction (such as onload / onerror which suffer from a very limited scope), this one can hijack every HTML element, which increases the danger due to a complete HTML elements scope. Versions 8.0.4 and 1.7.8.9 contain a fix for this issue.
— MITRE
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
composer/prestashop/prestashopto a version that resolves this vulnerability.Fixed in 1.7.8.9 - Upgrade
Upgrade
composer/prestashop/prestashopto a version that resolves this vulnerability.Fixed in 8.0.4 - Upgrade
Upgrade
PrestaShop 8.xto a version that resolves this vulnerability.Fixed in 8.0.4 - Upgrade
Upgrade
PrestaShop 1.7.xto a version that resolves this vulnerability.Fixed in 1.7.8.9
Event History
Frequently Asked Questions
What is CVE-2023-30838?
CVE-2023-30838 is a vulnerability in PrestaShop that allows for cross-site scripting (XSS) injection.
What is the severity of CVE-2023-30838?
The severity of CVE-2023-30838 is critical with a CVSS score of 9.9.
How does CVE-2023-30838 affect PrestaShop?
CVE-2023-30838 affects PrestaShop versions prior to 8.0.4 and 1.7.8.9.
How can I fix CVE-2023-30838?
To fix CVE-2023-30838, it is recommended to update to PrestaShop versions 8.0.4 or 1.7.8.9.
Where can I find more information about CVE-2023-30838?
More information about CVE-2023-30838 can be found in the references provided by PrestaShop.