CVE-2015-9253

MEDIUM

PHP < 7.1.20 - Uncontrolled Resource Consumption via Non-Blocking STDIN Stream

Title source: llm
STIX 2.1

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.

References (8)

Core 8
Core References
Exploit, Issue Tracking, Vendor Advisory x_refsource_misc
https://bugs.php.net/bug.php?id=70185
Exploit, Issue Tracking, Vendor Advisory x_refsource_misc
https://bugs.php.net/bug.php?id=75968
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3766-1/
Exploit, Issue Tracking, Vendor Advisory x_refsource_confirm
https://bugs.php.net/bug.php?id=73342https://github.com/php/php-src/pull/3287
Exploit, Third Party Advisory x_refsource_misc
https://www.futureweb.at/security/CVE-2015-9253/
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4279-1/

Scores

CVSS v3 6.5
EPSS 0.0300
EPSS Percentile 86.7%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-400
Status published
Products (2)
php/php 7.3.0 alpha1 (2 CPE variants)
php/php < 7.1.20
Published Feb 19, 2018
Tracked Since Feb 18, 2026