PT-2023-29071 · WordPress · Essential Blocks

Marco Wotschka · Published 2023-10-19 · Updated 2023-10-27 · CVE-2023-4402

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions The Essential Blocks plugin for WordPress versions up to, and including, 4.2.0

Description The issue allows unauthenticated attackers to inject a PHP Object via deserialization of untrusted input in the get products function. This could potentially allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code if a POP chain is present via an additional plugin or theme installed on the target system.

Recommendations For versions up to, and including, 4.2.0, update to a version that fixes the PHP Object Injection issue to prevent exploitation. As a temporary workaround, consider restricting access to the get products function until a patch is available.

Exploit

Fix

Deserialization of Untrusted Data

Weakness Enumeration

CWE-502

Related Identifiers

CVE-2023-4402

Affected Products

Essential Blocks

References · 6

• 🔥 https://plugins.trac.wordpress.org/browser/essential-blocks/trunk/includes/API/Product.php?rev=2950425#L49 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2023-4402 · Security Note
• https://osv.dev/vulnerability/CVE-2023-4402 · Vendor Advisory
• https://twitter.com/CVEnew/status/1715259873380667738 · Twitter Post
• https://t.me/cibsecurity/72661 · Telegram Post
• https://wordfence.com/threat-intel/vulnerabilities/id/1ede7a25-9bb2-408e-b7fb-e5bd4f594351?source=cve · Note