PrestaShop up to 1.7.8.8/8.0.3 isCleanHTML cross site scripting

Summaryinfo

A vulnerability labeled as problematic has been found in PrestaShop up to 1.7.8.8/8.0.3. Affected by this issue is the function ValidateCore::isCleanHTML. Such manipulation leads to cross site scripting. This vulnerability is documented as CVE-2023-30838. The attack can be executed remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in PrestaShop up to 1.7.8.8/8.0.3 (E-Commerce Management Software) and classified as problematic. Affected by this issue is the function ValidateCore::isCleanHTML. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. CVE summarizes:

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.

The weakness was released 04/25/2023 as GHSA-fh7r-996q-gvcp. The advisory is available at github.com. This vulnerability is handled as CVE-2023-30838 since 04/18/2023. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

Upgrading to version 1.7.8.9 or 8.0.4 eliminates this vulnerability. Applying the patch 46408ae4b02f3b8b1bb6e9dc63af5bcd858abd9c is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Type

• E-Commerce Management Software

Name

• PrestaShop

Version

• 1.7.8.0
• 1.7.8.1
• 1.7.8.2
• 1.7.8.3
• 1.7.8.4
• 1.7.8.5
• 1.7.8.6
• 1.7.8.7
• 1.7.8.8
• 8.0.0
• 8.0.1
• 8.0.2
• 8.0.3

License

• open-source

Website

• Product: https://github.com/PrestaShop/PrestaShop/

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