CVE-2023-6933 Better Search Replace <= 1.4.4 - Unauthenticated PHP Object Injection
Unauthenticated attackers can inject PHP objects via deserialization, potentially leading to code execution or data access if a POP chain exists.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2023-6933?
CVE-2023-6933 is a high-severity unsafe deserialization vulnerability in wpengine Better Search Replace, published on 5 Feb 2024. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
The Better Search Replace plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.4.4 via deserialization of untrusted input. This makes it possible for 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-2023-6933?
It affects 1 product.
Products include Wpengine Better Search Replace.
How do I fix CVE-2023-6933?
No fix has been published for CVE-2023-6933 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-2023-6933 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-6933 exists.
Public exploit code: 1 Nuclei template and 2 proofs of concept on GitHub.
Sources
Also known as GHSA-8gwq-mv35-rmmj.