CVE-2021-4450: post grid SQL Injection — Fix

Description

The Post Grid plugin for WordPress is vulnerable to blind SQL Injection via post metadata in versions up to, and including, 2.1.12 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers with contributor-level permissions and above to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

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CVSS v3.1 Score

8.8

HIGH

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

Weakness Type (CWE)

CWE-89 SQL Injection

Affected Products

Vendor	Product	Versions
pickplugins	post_grid	< 2.1.12

References

Advisories & Patches

https://plugins.trac.wordpress.org/changeset/2644269

Other References

https://www.wordfence.com/threat-intel/vulnerabilities/id/a321b112-ce37-4a0e-800f-f3feef6ac799?source=cve

Frequently Asked Questions

What is CVE-2021-4450? +

The Post Grid plugin for WordPress is vulnerable to blind SQL Injection via post metadata in versions up to, and including, 2.1.12 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers with contributor-level permissions and above to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2021-4450? +

CVE-2021-4450 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2021-4450? +

CVE-2021-4450 affects products from pickplugins, specifically: post_grid. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2021-4450? +

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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