Essential Blocks <= 4.2.0 - Unauthenticated PHP Object Injection via products

8.1
Deserialization of Untrusted Data
CVE CVE-2023-4402
CVSS 8.1 (High)
Publicly Published September 13, 2023
Last Updated January 22, 2024
Researcher Marco Wotschka - Wordfence

Description

The Essential Blocks plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 4.2.0 via deserialization of untrusted input in the get_products function. This allows unauthenticated attackers to inject a PHP Object. No POP chain is present in the vulnerable plugin. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.

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Vulnerability Details for Essential Blocks Pro

Software Type Plugin
Software Slug essential-blocks-pro (view on wordpress.org)
Patched? Yes
Remediation Update to version 1.1.1, or a newer patched version
Affected Version
  • <= 1.1.0
Patched Version
  • 1.1.1

1 other affected software package

Software Type Plugin
Software Slug essential-blocks (view on wordpress.org)
Patched? Yes
Remediation Update to version 4.2.1, or a newer patched version
Affected Version
  • <= 4.2.0
Patched Version
  • 4.2.1

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