CVE-2021-25094 Tatsu < 3.3.12 - Unauthenticated RCE
Unauthenticated attackers can upload a malicious PHP shell via a zip file to achieve remote code execution on the WordPress site.
- 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-2021-25094?
CVE-2021-25094 is a high-severity vulnerability in Unknown Tatsu, published on 25 Apr 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Tatsu WordPress plugin before 3.3.12 add_custom_font action can be used without prior authentication to upload a rogue zip file which is uncompressed under the WordPress's upload directory. By adding a PHP shell with a filename starting with a dot ".", this can bypass extension control implemented in the plugin. Moreover, there is a race condition in the zip extraction process which makes the shell file live long enough on the filesystem to be callable by an attacker.
Weakness: CWE-306
Which versions are affected by CVE-2021-25094?
It affects 1 product.
Products include Brandexponents Tatsu.
How do I fix CVE-2021-25094?
No fix has been published for CVE-2021-25094 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-25094 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-25094 exists.
Public exploit code: 1 Metasploit module, 1 Exploit-DB entry, 1 Nuclei template and 4 proofs of concept on GitHub.
Sources
Also known as GHSA-grmv-gp4f-w59q.