CVE-2024-21627: prestashop Input Validation Flaw — Fix

Description

PrestaShop is an open-source e-commerce platform. Prior to versions 8.1.3 and 1.7.8.11, some event attributes are not detected by the `isCleanHTML` method. Some modules using the `isCleanHTML` method could be vulnerable to cross-site scripting. Versions 8.1.3 and 1.7.8.11 contain a patch for this issue. The best workaround is to use the `HTMLPurifier` library to sanitize html input coming from users. The library is already available as a dependency in the PrestaShop project. Beware though that in legacy object models, fields of `HTML` type will call `isCleanHTML`.

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CVSS v3.1 Score

8.1

HIGH

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

Weakness Type (CWE)

CWE-20 Improper Input Validation

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
prestashop	prestashop	< 1.7.8.11
prestashop	prestashop	8.0.0 — 8.1.3

References

Advisories & Patches

https://github.com/PrestaShop/PrestaShop/commit/73cfb44666818eefd501b526a894fe884dd12129 https://github.com/PrestaShop/PrestaShop/commit/ba06d18466df5b92cb841d504cc7210121104883 https://github.com/PrestaShop/PrestaShop/security/advisories/GHSA-xgpm-q3mq-46rq https://github.com/PrestaShop/PrestaShop/commit/73cfb44666818eefd501b526a894fe884dd12129 https://github.com/PrestaShop/PrestaShop/commit/ba06d18466df5b92cb841d504cc7210121104883 https://github.com/PrestaShop/PrestaShop/security/advisories/GHSA-xgpm-q3mq-46rq

Frequently Asked Questions

What is CVE-2024-21627? +

PrestaShop is an open-source e-commerce platform. Prior to versions 8.1.3 and 1.7.8.11, some event attributes are not detected by the `isCleanHTML` method. Some modules using the `isCleanHTML` method could be vulnerable to cross-site scripting. Versions 8.1.3 and 1.7.8.11 contain a patch for this issue. The best workaround is to use the `HTMLPurifier` library to sanitize html input coming from users. The library is already available as a dependency in the PrestaShop project. Beware though that in legacy object models, fields of `HTML` type will call `isCleanHTML`. It has a CVSS v3.1 base score of 8.1 (HIGH).

How severe is CVE-2024-21627? +

CVE-2024-21627 has a CVSS v3.1 score of 8.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-21627? +

CVE-2024-21627 affects products from prestashop, specifically: prestashop. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-21627? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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