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Gentoo Linux: CVE-2021-21708: PHP: Multiple Vulnerabilities

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Gentoo Linux: CVE-2021-21708: PHP: Multiple Vulnerabilities

Severity
7
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:P)
Published
02/27/2022
Created
09/30/2022
Added
09/30/2022
Modified
09/30/2022

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.

Solution(s)

  • gentoo-linux-upgrade-dev-lang-php

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