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Vulnerabilities in the PHP language itself, and which PHP versions they affect.

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CVE-2015-9253

MEDIUM 6.5 CVSS 3.0
Published
February 19, 2018
Last modified
June 17, 2026
NVD status
Modified
Reported by
cve@mitre.org
Weakness
CWE-400
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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.

Affected products and versions

  • PHP — Before 7.1.20
  • PHP — From 7.2.0 (including) to 7.2.8 (excluding)
  • PHP versions 7.3.0alpha1, 7.3.0alpha2

References

  • bugs.php.net https://bugs.php.net/bug.php?id=70185 Exploit, Issue Tracking, Vendor Advisory
  • bugs.php.net https://bugs.php.net/bug.php?id=73342https://github.com/php/php-src/pull/3287 Exploit, Issue Tracking, Vendor Advisory
  • bugs.php.net https://bugs.php.net/bug.php?id=75968 Exploit, Issue Tracking, Vendor Advisory
  • github.com https://github.com/php/php-src/blob/PHP-7.1.20/NEWS#L20-L22 Third Party Advisory
  • github.com https://github.com/php/php-src/commit/69dee5c732fe982c82edb17d0dbc3e79a47748d8 Patch, Third Party Advisory
  • usn.ubuntu.com https://usn.ubuntu.com/3766-1/ Third Party Advisory
  • usn.ubuntu.com https://usn.ubuntu.com/4279-1/
  • www.futureweb.at https://www.futureweb.at/security/CVE-2015-9253/ Exploit, Third Party Advisory
  • nvd.nist.gov Official NVD record