CVE-2021-25094

Tatsu < 3.3.12 - Unauthenticated RCE

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.

Affected

Tatsu

CVSS v3.1 NVD

8.1 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0 NVD

6.8 MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P

EPSS

83.23% chance of exploitation in the next 30 days, 100th percentile

Nuclei

high · CWE-306

Published

2022-04-25

Updated

2025-04-21

Proof-of-concept exploits (6)

• http://packetstormsecurity.com/files/167190/WordPress-Tatsu-Builder-Remote-Code-Execution…
• https://wpscan.com/vulnerability/fb0097a0-5d7b-4e5b-97de-aacafa8fffcd
• InMyMine7/SharkXploit9★ · 2023-12-05
• TUANB4DUT/typehub-exploiter1★ · 2022-07-10
• darkpills/CVE-2021-25094-tatsu-preauth-rce9★ · 2023-08-30
• xdx57/CVE-2021-250940★ · 2022-07-10

Nuclei templates (1)

• projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-25094.yaml

Metasploit modules (1)

• rapid7/metasploit-framework/blob/master/modules/exploits/multi/http/wp_tatsu_rce.rb

ExploitDB entries (1)

• https://www.exploit-db.com/exploits/52260

Security advisories

• https://darkpills.com/wordpress-tatsu-builder-preauth-rce-cve-2021-25094

References

• CVE Record
• NVD entry

Related

• CVE-2021-24284
• CVE-2021-24307
• CVE-2017-7269