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CVE-2023-30838: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

April 25, 2023

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.

References

  • github.com/PrestaShop/PrestaShop/commit/46408ae4b02f3b8b1bb6e9dc63af5bcd858abd9c
  • github.com/PrestaShop/PrestaShop/commit/dc682192df0e4b0d656a8e645b29ca1b9dbe3693
  • github.com/PrestaShop/PrestaShop/releases/tag/1.7.8.9
  • github.com/PrestaShop/PrestaShop/releases/tag/8.0.4
  • github.com/PrestaShop/PrestaShop/security/advisories/GHSA-fh7r-996q-gvcp
  • github.com/advisories/GHSA-fh7r-996q-gvcp
  • nvd.nist.gov/vuln/detail/CVE-2023-30838

Code Behaviors & Features

Detect and mitigate CVE-2023-30838 with GitLab Dependency Scanning

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Affected versions

All versions before 1.7.8.9, all versions starting from 8.0.0 before 8.0.4

Fixed versions

  • 1.7.8.9
  • 8.0.4

Solution

Upgrade to versions 1.7.8.9, 8.0.4 or above.

Impact 9.9 CRITICAL

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Learn more about CVSS

Weakness

  • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
  • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Source file

packagist/prestashop/prestashop/CVE-2023-30838.yml

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