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.
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References
History
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MITRE
Status: PUBLISHED
Assigner: php
Published: 2022-02-27T08:00:12.018780Z
Updated: 2024-09-17T03:18:02.531Z
Reserved: 2021-01-04T00:00:00
Link: CVE-2021-21708
Vulnrichment
No data.
NVD
Status : Modified
Published: 2022-02-27T08:15:06.817
Modified: 2024-11-21T05:48:52.737
Link: CVE-2021-21708
Redhat