CVE-2021-21703 (GCVE-0-2021-21703)
Vulnerability from cvelistv5
Published
2021-10-25 05:40
Modified
2024-09-17 03:02
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE
Summary
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.
References
Impacted products
Vendor Product Version
PHP Group PHP Version: 7.3.x   <
Version: 7.4.x   < 7.4.25
Version: 8.0.X   < 8.0.12
 Create a notification for this product.
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