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| CVE ID: | CVE-2021-21708 |
| 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. |
| Test IDs: | 1.3.6.1.4.1.25623.1.0.147658 1.3.6.1.4.1.25623.1.1.4.2022.0654.1 1.3.6.1.4.1.25623.1.0.845260 1.3.6.1.4.1.25623.1.0.819806 1.3.6.1.4.1.25623.1.0.854572 1.3.6.1.4.1.25623.1.0.147657 1.3.6.1.4.1.25623.1.1.13.2022.048.02 1.3.6.1.4.1.25623.1.0.819812 1.3.6.1.4.1.25623.1.1.4.2022.0847.1 |
| Cross References: |
Common Vulnerability Exposure (CVE) ID: CVE-2021-21708 https://security.gentoo.org/glsa/202209-20 https://bugs.php.net/bug.php?id=81708 https://bugs.php.net/bug.php?id=81708 |