CVE-2024-53277: framework XSS — Fix

Description

Silverstripe Framework is a PHP framework which powers the Silverstripe CMS. In some cases, form messages can contain HTML markup. This is an intentional feature, allowing links and other relevant HTML markup for the given message. Some form messages include content that the user can provide. There are scenarios in the CMS where that content doesn't get correctly sanitised prior to being included in the form message, resulting in an XSS vulnerability. This issue has been addressed in silverstripe/framework version 5.3.8 and users are advised to upgrade. There are no known workarounds for this vulnerability.

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CVSS v3.1 Score

5.4

MEDIUM

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

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
silverstripe	framework	< 5.3.8

References

Advisories & Patches

https://github.com/silverstripe/silverstripe-framework/commit/74904f539347b7d1f8c5b5fb9e28d62ff251ee00 https://github.com/silverstripe/silverstripe-framework/security/advisories/GHSA-ff6q-3c9c-6cf5 https://www.silverstripe.org/download/security-releases/cve-2024-53277

Frequently Asked Questions

What is CVE-2024-53277? +

Silverstripe Framework is a PHP framework which powers the Silverstripe CMS. In some cases, form messages can contain HTML markup. This is an intentional feature, allowing links and other relevant HTML markup for the given message. Some form messages include content that the user can provide. There are scenarios in the CMS where that content doesn't get correctly sanitised prior to being included in the form message, resulting in an XSS vulnerability. This issue has been addressed in silverstripe/framework version 5.3.8 and users are advised to upgrade. There are no known workarounds for this vulnerability. It has a CVSS v3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2024-53277? +

CVE-2024-53277 has a CVSS v3.1 score of 5.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-53277? +

CVE-2024-53277 affects products from silverstripe, specifically: framework. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-53277? +

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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