Overview
- Description
- In PHP versions 7.4.x below 7.4.28, 8.0.x below 8.0.16, and 8.1.x below 8.1.3, when using filter functions with FILTER_VALIDATE_FLOAT filter and min/max limits, if the filter fails, there is a possibility to trigger use of allocated memory after free, which can result it crashes, and potentially in overwrite of other memory chunks and RCE. This issue affects: code that uses FILTER_VALIDATE_FLOAT with min/max limits.
- Source
- security@php.net
- NVD status
- Analyzed
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 9.8
- Impact score
- 5.9
- Exploitability score
- 3.9
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Severity
- CRITICAL
CVSS 2.0
- Type
- Primary
- Base score
- 6.8
- Impact score
- 6.4
- Exploitability score
- 8.6
- Vector string
- AV:N/AC:M/Au:N/C:P/I:P/A:P
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "07B88F14-3867-49F4-8BE6-64E1D98927AB",
"versionEndExcluding": "7.4.28",
"versionStartIncluding": "7.4.0"
},
{
"criteria": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "AC80C1D0-09AC-43B1-A653-7ECFB37DC42E",
"versionEndExcluding": "8.0.16",
"versionStartIncluding": "8.0.0"
},
{
"criteria": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B7E795BC-F012-4904-B445-D76E358EC66D",
"versionEndExcluding": "8.1.3",
"versionStartIncluding": "8.1.0"
}
],
"operator": "OR"
}
]
}
]