An issue exists in PHP 7.3.x prior to 7.3.0alpha3, 7.2.x prior to 7.2.8, and prior to 7.1.20. The php-fpm master process restarts a child process in an endless loop when using program execution functions (e.g., passthru, exec, shell_exec, or system) with a non-blocking STDIN stream, causing this master process to consume 100% of the CPU, and consume disk space with a large volume of error logs, as demonstrated by an attack by a customer of a shared-hosting facility.
| Vulnerable Product | Search on Vulmon | Subscribe to Product |
|---|---|---|
php php 7.3.0 |
||
php php |
Vulmon