Vulnerability Details CVE-2015-9253
An issue was discovered in PHP 7.3.x before 7.3.0alpha3, 7.2.x before 7.2.8, and before 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.014
EPSS Ranking 79.7%
CVSS Severity
CVSS v3 Score 6.5
CVSS v2 Score 6.8
Products affected by CVE-2015-9253