CVE-2022-46853

The Post Grid – Shortcode, Gutenberg Blocks and Elementor Addon for Post Grid <= 5.0.4 - Cross-Site Request Forgery in rttpg_spare_me

2023-02-20 00:00
Muhammad Daffa

Strategic Overview

Status
Patched in 5.0.5
Affected Plugin
The Post Grid – Shortcode, Gutenberg Blocks and Elementor Addon for Post Grid
Affected Version
<= 5.0.4
CVSS
4.3Medium
Weakness type
CWE-352 · Cross-Site Request Forgery (CSRF)
CVE
CVE-2022-46853
View all The Post Grid – Shortcode, Gutenberg Blocks and Elementor Addon for Post Grid vulnerabilities

At a glance

CVE-2022-46853 is a medium-severity Cross-Site Request Forgery (CSRF) vulnerability in the The Post Grid WordPress plugin, affecting versions <= 5.0.4. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 5.0.5; sites on affected versions should update now. Disclosed February 2023, reported by Muhammad Daffa.

Vulnerability Overview

The The Post Grid – Shortcode, Gutenberg Blocks and Elementor Addon for Post Grid plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 5.0.4. This is due to missing or incorrect nonce validation on the rttpg_spare_me function. This makes it possible for unauthenticated attackers to dismiss plugin notifications via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site.

CWE-352: Cross-Site Request Forgery (CSRF)

Reaching this weakness in The Post Grid <= 5.0.4 takes a caller who can reach the endpoint. Cross-site request forgery abuses the fact that browsers attach a victim's cookies to any request, so a state-changing action that only checks who you are, not whether you meant to act, can be triggered from another site.

An attacker who gets a logged-in user to load a crafted page can perform that action as them, with the impact scaling to whatever the victim's role is allowed to do. For The Post Grid the fix is 5.0.5: builds <= 5.0.4 are affected, anything from 5.0.5 onward is not.

Remediation

Update to version 5.0.5, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to The Post Grid: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: The Post Grid 5.0.5 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2022-46853https://www.wordfence.com/threat-intel/vulnerabilities/id/b352be87-ea61-4666-a4d0-cf93fef40e33https://nvd.nist.gov/vuln/detail/CVE-2022-46853

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C