CVE-2015-9253
MEDIUM 6.5EPSS 4.2%
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.
- CVSS v3.0 NVD
- 6.5 MEDIUM
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - CVSS v2.0 NVD
- 6.8 MEDIUM
AV:N/AC:L/Au:S/C:N/I:N/A:C - EPSS
- 4.18% chance of exploitation in the next 30 days, 91st percentile
- Published
- 2018-02-19
- Updated
- 2024-08-06
Proof-of-concept exploits (1)
Security advisories
- https://bugs.php.net/bug.php?id=70185
- https://bugs.php.net/bug.php?id=73342https://github.com/php/php-src/pull/3287
- https://bugs.php.net/bug.php?id=75968
- php/php-src/blob/PHP-7.1.20/NEWS#L20-L22
- https://usn.ubuntu.com/3766-1
- https://www.futureweb.at/security/CVE-2015-9253
- https://usn.ubuntu.com/4279-1