National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2015-9253 Detail

Current 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.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 6.5 MEDIUM
Vector: AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H (V3.0 legend)
Impact Score: 3.6
Exploitability Score: 2.8


Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 6.8 MEDIUM
Vector: (AV:N/AC:L/Au:S/C:N/I:N/A:C) (V2 legend)
Impact Subscore: 6.9
Exploitability Subscore: 8.0


Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): Single
Confidentiality (C): None
Integrity (I): None
Availability (A): Complete
Additional Information:
Allows disruption of service

References to Advisories, Solutions, and Tools

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

Technical Details

Vulnerability Type (View All)

  • Uncontrolled Resource Consumption (CWE-400)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (excluding)
7.1.20
 cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
7.2.0
Up to (excluding)
7.2.8
 cpe:2.3:a:php:php:7.3.0:alpha1:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:php:php:7.3.0:alpha2:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

6 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2015-9253
NVD Published Date:
02/19/2018
NVD Last Modified:
04/26/2019