php81-user-agent-backdoor

by selfmade · built

PHP version 8.1.0-dev was implanted with a backdoor on March 28, 2021, but the backdoor was quickly discovered and removed. When this backdoor is present on a server, an attacker can execute arbitrary code by sending a User-Agentt header.

Install on your instance

Open LabStore on any connected Selfmade Ninja Labs instance and press Get on php81-user-agent-backdoor — or, from the instance shell:

labsctl store-install php81-user-agent-backdoor