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Resource Exhaustion Affecting php7.0 package, versions <7.0.33-0ubuntu0.16.04.16+esm3

Severity

 Recommended
low

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.58% (79th percentile)

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  • Snyk IDSNYK-UBUNTU1604-PHP70-386421
  • published19 Feb 2018
  • disclosed19 Feb 2018
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Introduced: 19 Feb 2018

CVE-2015-9253  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade Ubuntu:16.04 php7.0 to version 7.0.33-0ubuntu0.16.04.16+esm3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream php7.0 package and not the php7.0 package as distributed by Ubuntu. See How to fix? for Ubuntu:16.04 relevant fixed versions and status.

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.