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CVE-2023-4386 Essential Blocks <= 4.2.0 - Unauthenticated PHP Object Injection via queries

High 8.1 Published Updated

Unauthenticated attackers can inject PHP objects via deserialization, potentially leading to code execution or data exposure if a POP chain exists.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2023-4386?

CVE-2023-4386 is a high-severity unsafe deserialization vulnerability in wpdevteam Essential Blocks Pro, published on 20 Oct 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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_posts 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.

Weakness: CWE-502

Which versions are affected by CVE-2023-4386?

It affects 1 product.

Products include Wpdeveloper Essential Blocks.

How do I fix CVE-2023-4386?

No fix has been published for CVE-2023-4386 yet. Limit exposure of the affected software until one is available.

Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.

Is CVE-2023-4386 being exploited?

There is no known exploitation of CVE-2023-4386 in the wild and no public exploit code.

Sources

Also known as GHSA-w4jx-8cv4-c4v7.

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