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GHSA-fh7r-996q-gvcphigh8.0

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.

Source excerpt · OSV

Affected packages

Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.

prestashop/prestashop Packagist
Affected rangeRecorded fix
From 8.0.0 before 8.0.4Ecosystem versions8.0.4
Earlier releases before 1.7.8.9Ecosystem versions1.7.8.9

Version evidence: OSV · GHSA-fh7r-996q-gvcp

View original version evidence (80 explicit versions)

Original source description

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

References