CVE-2015-9253 Information
Share on: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.
CVSS Vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Reference
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 https://github.com/php/php-src/blob/PHP-7.1.20/NEWSL20-L22 https://github.com/php/php-src/commit/69dee5c732fe982c82edb17d0dbc3e79a47748d8 https://usn.ubuntu.com/3766-1/ https://usn.ubuntu.com/4279-1/ https://www.futureweb.at/security/CVE-2015-9253/
Attack Complexity
LOW
Privileges Required
LOW
User Interaction Required
LOW
Scope
NONE
Confidentiality Impact
UNCHANGED
Integrity Impact
NONE
Availability Impact
NONE
Base Score
HIGH
Base Severity
6.5