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Security Advisories: GSA_kwCzR0hTQS1maDdyLTk5NnEtZ3ZjcM4AAy9g

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

Permalink: https://github.com/advisories/GHSA-fh7r-996q-gvcp
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS1maDdyLTk5NnEtZ3ZjcM4AAy9g
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: over 1 year ago
Updated: about 1 year ago


CVSS Score: 8.1
CVSS vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H

Identifiers: GHSA-fh7r-996q-gvcp, CVE-2023-30838
References: Repository: https://github.com/PrestaShop/PrestaShop
Blast Radius: 2.4

Affected Packages

packagist:prestashop/prestashop
Dependent packages: 0
Dependent repositories: 2
Downloads: 6,235 total
Affected Version Ranges: < 1.7.8.9, >= 8.0.0, < 8.0.4
Fixed in: 1.7.8.9, 8.0.4
All affected versions: 8.0.0, 8.0.1, 8.0.2, 8.0.3, 8.0.4, 8.0.5, 8.1.0, 8.1.1, 8.1.2, 8.1.3, 8.1.4, 8.1.5, 8.1.6, 8.1.7, 8.2.0
All unaffected versions: