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.
CVE-2021-21708
Published Date: 2022-02-27T08:15Z
Last Modified: 2022-10-07T14:31Z
CVSS Score: 9.8 (CRITICAL)
EPSS Score: 0.33%
Risk Score: 6.86 (HIGH)
Risk Score based on CVSS score and EPSS. This score is for reference purposes and is not internationally recognized.
CVSS:
9.8 |
EPSS:
0.33%
Mitre ATT&CK Technical v15.1
T1053.002 – At
Technical Analysis & Mitigation Measures
Reference Links
Vendor - Produce - Version
php - php, php - php, php - php
Disclaimer
The content on this website is automatically sourced from external websites such as the National Vulnerability Database (NVD), GitHub, and other security-related sources. This content is for reference purposes only, and we are not responsible for the accuracy or integrity of the information linked or displayed from these sources.