CVE-2021-24652

PostX - Gutenberg Blocks for Post Grid <= 2.4.9 - Unauthorized Access Controls

2021-08-17 00:00
apple502j

Strategic Overview

Status
Patched in 2.4.10
Affected Plugin
Post Grid Gutenberg Blocks – PostX
Affected Version
< 2.4.10
CVSS
6.5Medium
Weakness type
CWE-863 · Incorrect Authorization
CVE
CVE-2021-24652
View all Post Grid Gutenberg Blocks – PostX vulnerabilities

At a glance

CVE-2021-24652 is a medium-severity Incorrect Authorization vulnerability in the Post Grid Gutenberg Blocks WordPress plugin, affecting versions < 2.4.10. It carries a CVSS score of 6.5 (reachable over the network; low attack complexity; high integrity impact). The issue is fixed in version 2.4.10; sites on affected versions should update now. Disclosed August 2021, reported by apple502j.

Vulnerability Overview

The PostX – Gutenberg Blocks for Post Grid WordPress plugin before 2.4.10 performs incorrect checks before allowing any logged in user to perform some ajax based requests, allowing any user to modify, delete or add ultp_options values.

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 interaction from a victim user. A successful exploit has high impact on integrity.

CWE-863: Incorrect Authorization

Reaching this weakness in Post Grid Gutenberg Blocks < 2.4.10 takes a caller who can reach the endpoint. Incorrect authorization means a permission check exists but evaluates the wrong thing, so it passes for callers it was meant to stop.

The action runs for users the code intended to exclude, with the same effect as having no check at all. For Post Grid Gutenberg Blocks the fix is 2.4.10: builds < 2.4.10 are affected, anything from 2.4.10 onward is not.

Remediation

Update to version 2.4.10, or a newer patched version

How does WordSec protect against this?

Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: Post Grid Gutenberg Blocks 2.4.10 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2021-24652https://www.wordfence.com/threat-intel/vulnerabilities/id/b323d910-23f6-41e2-9d64-d60398994996https://nvd.nist.gov/vuln/detail/CVE-2021-24652

Related records

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