Essential Blocks for Gutenberg <= 4.2.0 - Missing Authorization via AJAX actions

2023-11-13 00:00

Abdi Pranata

Strategic Overview

Status

Patched in 4.2.1

Affected PluginGutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns

Affected Version<= 4.2.0

CVSS4.3Medium

CVECVE-2023-47760

View all Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns vulnerabilities

Vulnerability Overview

The Essential Blocks for Gutenberg plugin for WordPress is vulnerable to unauthorized access to AJAX actions due to a missing capability check on several functions in versions up to, and including, 4.2.0. This makes it possible for authenticated attackers, with subscriber-level access and above, to invoke those functions. A nonce check was performed in all of them. However, the nonce was leaked on the profile page. CVE-2023-51360 appears to be a duplicate of this issue.

Technical Analysis

REMEDIATION: Update to version 4.2.1, or a newer patched version --- IDENTIFIER: CWE-862 (Missing Authorization) The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

External References

https://www.cve.org/CVERecord?id=CVE-2023-47760 https://www.wordfence.com/threat-intel/vulnerabilities/id/c2136e1c-5f69-434d-bdc7-72a144da744b

CVSS Vector

4.3

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityNone

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