CVE-2024-1775: nextend social XSS — Fix

Description

The Nextend Social Login and Register plugin for WordPress is vulnerable to a self-based Reflected Cross-Site Scripting via the ‘error_description’ parameter in all versions up to, and including, 3.1.12 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers, with access to a subscriber-level account, to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. NOTE: This vulnerability can be successfully exploited on a vulnerable WordPress instance against an OAuth pre-authenticated higher-level user (e.g., administrator) by leveraging a cross-site request forgery in conjunction with a certain social engineering technique to achieve a critical impact scenario (cross-site scripting to administrator-level account creation). However, successful exploitation requires "Debug mode" to be enabled in the plugin's "Global Settings".

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CVSS v3.1 Score

5.4

MEDIUM

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

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
nextendweb	nextend_social_login	< 3.1.13

References

Advisories & Patches

https://plugins.trac.wordpress.org/changeset/3042326/nextend-facebook-connect https://plugins.trac.wordpress.org/changeset/3042326/nextend-facebook-connect

Other References

https://www.wordfence.com/threat-intel/vulnerabilities/id/3bad1d0d-3817-4c7f-a012-5a85b577781e?source=cve https://www.wordfence.com/threat-intel/vulnerabilities/id/3bad1d0d-3817-4c7f-a012-5a85b577781e?source=cve

Frequently Asked Questions

What is CVE-2024-1775? +

The Nextend Social Login and Register plugin for WordPress is vulnerable to a self-based Reflected Cross-Site Scripting via the ‘error_description’ parameter in all versions up to, and including, 3.1.12 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers, with access to a subscriber-level account, to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. NOTE: This vulnerability can be successfully exploited on a vulnerable WordPress instance against an OAuth pre-authenticated higher-level user (e.g., administrator) by leveraging a cross-site request forgery in conjunction with a certain social engineering technique to achieve a critical impact scenario (cross-site scripting to administrator-level account creation). However, successful exploitation requires "Debug mode" to be enabled in the plugin's "Global Settings". It has a CVSS v3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2024-1775? +

CVE-2024-1775 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-2024-1775? +

CVE-2024-1775 affects products from nextendweb, specifically: nextend_social_login. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-1775? +

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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CVE-2024-1775