PHP Object Injection Vulnerability in Essential Blocks Plugin for WordPress
CVE-2023-4386

8.1HIGH

Key Information:

Vendor
Wordpress
Status
Essential Blocks Pro
Essential Blocks – Page Builder Gutenberg Blocks, Patterns & Templates
Vendor
CVE Published:
20 October 2023

Summary

The Essential Blocks plugin for WordPress is susceptible to PHP Object Injection due to insecure deserialization of untrusted input in the get_posts function. Attackers who are not authenticated can potentially inject a PHP Object, exploiting the vulnerability in versions up to and including 4.2.0. While the plugin does not inherently possess a Proof of Concept (POP) chain, the presence of such a chain through additional plugins or themes could enable attackers to carry out harmful activities, including modifying or deleting files and accessing sensitive information.

Affected Version(s)

Essential Blocks – Page Builder Gutenberg Blocks, Patterns & Templates * <= 4.2.0

Essential Blocks Pro * <= 1.1.0

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/essential-bloc...

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Marco Wotschka
.