CVE-2021-4451 NinjaFirewall <= 4.3.3 - Authenticated PHAR Deserialization
Authenticated attackers can exploit PHAR deserialization in NinjaFirewall to potentially execute code if vulnerable software is present.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-4451?
CVE-2021-4451 is a medium-severity unsafe deserialization vulnerability in nintechnet NinjaFirewall (WP Edition) – Advanced Security Plugin and Firewall, published on 16 Oct 2024. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
The NinjaFirewall plugin for WordPress is vulnerable to Authenticated PHAR Deserialization in versions up to, and including, 4.3.3. This allows authenticated attackers to perform phar deserialization on the server. This deserialization can allow other plugin or theme exploits if vulnerable software is present (WordPress, and NinjaFirewall).
Weakness: CWE-502
Which versions are affected by CVE-2021-4451?
It affects 1 product.
Products include Nintechnet Ninjafirewall.
How do I fix CVE-2021-4451?
No fix has been published for CVE-2021-4451 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-2021-4451 being exploited?
There is no known exploitation of CVE-2021-4451 in the wild and no public exploit code.
Sources
Also known as GHSA-pgv2-9j82-2qcq.