Updated: 2025-08-20 00:25:28.321484
Description:
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.
| Links | NIST | CIRCL | RHEL | Ubuntu |
| Severity | Score | |
|---|---|---|
| CVSS Version 2.x | MEDIUM | 6.8 |
| CVSS Version 3.x | MEDIUM | 6.5 |
| OS name | Project name | Version | Score | Severity | Status | Errata | Last updated | Statement |
|---|---|---|---|---|---|---|---|---|
| Debian 10 | php | 8.0 | 6.5 | MEDIUM | Ignored | 2025-05-29 03:53:19 | ||
| Debian 10 | php | 5.6 | 6.5 | MEDIUM | Already Fixed | 2025-05-03 03:54:57 | ||
| Debian 10 | php | 7.3 | 6.5 | MEDIUM | Ignored | 2025-05-29 03:53:19 | ||
| Debian 10 | php | 8.2 | 6.5 | MEDIUM | Ignored | 2025-05-29 03:53:18 | ||
| Debian 10 | php | 8.1 | 6.5 | MEDIUM | Ignored | 2025-05-29 03:53:19 | ||
| Debian 10 | php | 7.0 | 6.5 | MEDIUM | Ignored | 2025-05-29 03:53:19 | ||
| Debian 10 | php | 7.1 | 6.5 | MEDIUM | Ignored | 2025-05-29 03:53:19 | ||
| Debian 10 | php | 7.2 | 6.5 | MEDIUM | Ignored | 2025-05-29 03:53:19 | ||
| Debian 10 | php | 7.4 | 6.5 | MEDIUM | Ignored | 2025-05-29 03:53:19 | ||
| Debian 11 | php | 8.1 | 6.5 | MEDIUM | Ignored | 2025-05-29 03:53:18 |