UBUNTU-CVE-2015-9253

Advisory lineage Upstream: 1 Downstream: 3
Upstream
CVE-2015-9253
Published: 19 Feb 2018, 00:00
Last modified:22 Apr 2026, 10:24

Vulnerability Summary

Overall Risk (default)
medium
26/100
CVSS Score
6.5 MEDIUM
3.0 (osv_ubuntu)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

19 Feb 2018, 00:00
Published
Vulnerability first disclosed
22 Apr 2026, 10:24
Last Modified
Vulnerability information updated

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 Metrics

  • v3.0•MEDIUM•Score: 6.5CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Systems

  • ubuntu•php5

    < 5.5.9+dfsg-1ubuntu4.29+esm10

  • ubuntu•php7.0

    < 7.0.33-0ubuntu0.16.04.16+esm3

  • ubuntu•php7.2

    < 7.2.10-0ubuntu0.18.04.1

References (7)