Overview
- 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
- cve@mitre.org
- NVD status
- Modified
Risk scores
CVSS 3.0
- Type
- Primary
- Base score
- 6.5
- Impact score
- 3.6
- Exploitability score
- 2.8
- Vector string
- CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Severity
- MEDIUM
CVSS 2.0
- Type
- Primary
- Base score
- 6.8
- Impact score
- 6.9
- Exploitability score
- 8
- Vector string
- AV:N/AC:L/Au:S/C:N/I:N/A:C
Weaknesses
- nvd@nist.gov
- CWE-400
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "23681551-9B0F-4EE5-A15D-6C8A2838DDB7",
"versionEndExcluding": "7.1.20"
},
{
"criteria": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "FF1D395B-6711-40A9-8E0E-9153B8A71F04",
"versionEndExcluding": "7.2.8",
"versionStartIncluding": "7.2.0"
},
{
"criteria": "cpe:2.3:a:php:php:7.3.0:alpha1:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "3F88F1A8-6775-41D4-A726-6902D6A87AF1"
},
{
"criteria": "cpe:2.3:a:php:php:7.3.0:alpha2:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "D52D342A-CAB9-434D-8668-2FEDBA741A81"
}
],
"operator": "OR"
}
]
}
]