CVE-2021-21708

 

Published at: - 27-02-2022 09:15

Last modified: - 07-10-2022 04:31

Total changes: - 7

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

 

Verification logic

 

Reference

• N/A-Exploit, Issue Tracking, Patch, Vendor Advisory
• https://security.netapp.com/advisory/ntap-20220325-0004/
• GLSA-202209-20-Third Party Advisory

 

Keywords

NVD

 

CVE-2021-21708

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures