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CVE-2015-9253 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://bugs.php.net/bug.php?id=70185	CVE	ExploitIssue TrackingVendor Advisory
https://bugs.php.net/bug.php?id=73342https://github.com/php/php-src/pull/3287	CVE	ExploitIssue TrackingVendor Advisory
https://bugs.php.net/bug.php?id=75968	CVE	ExploitIssue TrackingVendor Advisory
https://github.com/php/php-src/blob/PHP-7.1.20/NEWS#L20-L22	CVE	Third Party Advisory
https://github.com/php/php-src/commit/69dee5c732fe982c82edb17d0dbc3e79a47748d8	CVE	PatchThird Party Advisory
https://usn.ubuntu.com/3766-1/	CVE	Third Party Advisory
https://usn.ubuntu.com/4279-1/	CVE
https://www.futureweb.at/security/CVE-2015-9253/	CVE	ExploitThird Party Advisory
https://bugs.php.net/bug.php?id=70185	[email protected]	ExploitIssue TrackingVendor Advisory
https://bugs.php.net/bug.php?id=73342https://github.com/php/php-src/pull/3287	[email protected]	ExploitIssue TrackingVendor Advisory
https://bugs.php.net/bug.php?id=75968	[email protected]	ExploitIssue TrackingVendor Advisory
https://github.com/php/php-src/blob/PHP-7.1.20/NEWS#L20-L22	[email protected]	Third Party Advisory
https://github.com/php/php-src/commit/69dee5c732fe982c82edb17d0dbc3e79a47748d8	[email protected]	PatchThird Party Advisory
https://usn.ubuntu.com/3766-1/	[email protected]	Third Party Advisory
https://usn.ubuntu.com/4279-1/	[email protected]
https://www.futureweb.at/security/CVE-2015-9253/	[email protected]	ExploitThird Party Advisory

see all 16 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-400	Uncontrolled Resource Consumption	[email protected]

Affected Products

Product	Versions
php php	< 7.1.20 >= 7.2.0, < 7.2.8 7.3.0 alpha1 7.3.0 alpha2
CPE cpe:2.3:a:php:php:::::::: cpe:2.3:a:php:php:7.3.0:alpha1:::::: cpe:2.3:a:php:php:7.3.0:alpha2:::::: Remediation No remediation found in references.

Change History

10 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Feb 19, 2020	CVE Modified	[email protected]
Apr 26, 2019	Modified Analysis	[email protected]
Sep 18, 2018	CVE Modified	[email protected]
Jul 26, 2018	CVE Modified	[email protected]
Jul 11, 2018	CVE Modified	[email protected]
Mar 18, 2018	Initial Analysis	[email protected]
Mar 3, 2018	CVE Modified	[email protected]