Code injection

2021-10-2506:15:00

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6.8 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

51.0%

JSON

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.

CPENameOperatorVersion
debian_linuxeq9.0
debian_linuxeq10.0
debian_linuxeq11.0
fedoraeq33
fedoraeq34
fedoraeq35
communications_diameter_signaling_routerge8.0.0.0
communications_diameter_signaling_routerle8.5.0.2
phpge7.3.0
phple7.3.31

Name	Operator	Version
debian_linux	eq	9.0
debian_linux	eq	10.0
debian_linux	eq	11.0
fedora	eq	33
fedora	eq	34
fedora	eq	35
communications_diameter_signaling_router	ge	8.0.0.0
communications_diameter_signaling_router	le	8.5.0.2
php	ge	7.3.0
php	le	7.3.31