Out-of-bounds write vulnerability in PHP - CVE-2021-21703ID: oval:org.secpod.oval:def:76628 | Date: (C)2021-12-31 (M)2024-04-17 |
Class: VULNERABILITY | Family: windows |
In PHP versions 7.3.x up to and including 7.3.31, 7.4.x below 7.4.25 and 8.0.x below 8.0.12, when running PHP FPM SAPI with main FPM daemon process running as root and child worker processes running as lower-privileged users, it is possible for the child processes to access memory shared with the main process and write to it, modifying it in a way that would cause the root process to conduct invalid memory reads and writes, which can be used to escalate privileges from local unprivileged user to the root user.
Platform: |
Microsoft Windows 7 |
Microsoft Windows 8.1 |
Microsoft Windows Server 2008 |
Microsoft Windows Server 2012 |
Microsoft Windows Server 2012 R2 |
Microsoft Windows 10 |
Microsoft Windows 11 |
Microsoft Windows Server 2008 R2 |
Microsoft Windows Server 2016 |
Microsoft Windows Server 2019 |
Microsoft Windows Server 2022 |