CVE-2021-21708

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.

Score
CVSS 3.1 9.8 Critical
Status
Modified - security@php.net
Published
2022-02-27
Last modified
2024-09-17
Weaknesses
CWE-416

Affected products

References

 
 
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