CVE-2021-25094 PoC — Tatsu < 3.3.12 - Unauthenticated RCE

Source

https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-25094.yaml

Associated Vulnerability

Title: Tatsu < 3.3.12 - Unauthenticated RCE (CVE-2021-25094)
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.

Description

An unrestricted file upload in WordPress Tatsubuilder plugin version <= 3.3.11 enables an unauthenticated attacker to perform a remote code execution (RCE) on the server host due to multiple weaknesses in the font import feature and put 100,000 websites at risk.

File Snapshot

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