• CVE-2021-21708

发布时间: 2022年3月19日

修改时间: 2024年10月31日

概要

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.

CVSS v3 指标

NVD openEuler
Confidentiality High High
Attack Vector Network Network
CVSS评分 9.8 9.8
Attack Complexity Low Low
Privileges Required None None
Scope Unchanged Unchanged
Integrity High High
User Interaction None None
Availability High High

安全公告

公告名 概要 发布时间
KylinSec-SA-2022-1337 php security update 2022年3月19日

影响产品

产品 状态
KY3.4-5 php Fixed