Severity Medium
Remote No
Type Denial of service
An issue was discovered in PHP through 7.2.2. 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.
Group Package Affected Fixed Severity Status Ticket
AVG-623 php71-fpm 7.1.14-1 Medium Unknown FS#57579
AVG-622 php-fpm 7.2.3-1 Medium Vulnerable FS#57579
7.2.3 has been released without a fix for this issue.