Detections
Analytics
ALMA-09-041160 - AlmaLinux OS 9 must prevent kernel profiling by nonprivileged users.
Information
Setting the kernel.perf_event_paranoid kernel parameter to "2" prevents attackers from gaining additional system information as a nonprivileged user.Satisfies: SRG-OS-000132-GPOS-00067, SRG-OS-000138-GPOS-00069
Solution
Configure AlmaLinux OS 9 to prevent kernel profiling by nonprivileged users with the following command:$ echo "kernel.perf_event_paranoid = 2" > /etc/sysctl.d/60-perf.conf
Load settings from all system configuration files with the following command:
$ sysctl --system
See Also
https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_CL_AlmaLinux_OS_9_V1R6_STIG.zip
Item Details
Audit Name: DISA Cloud Linux AlmaLinux OS 9 STIG v1r6
Category: SYSTEM AND COMMUNICATIONS PROTECTION
References: 800-53|SC-2, 800-53|SC-4, CAT|II, CCI|CCI-001082, CCI|CCI-001090, Rule-ID|SV-269426r1117266_rule, STIG-ID|ALMA-09-041160, Vuln-ID|V-269426
Plugin: Unix
Control ID: 48ce8c5e4271cd4cabe33c1ed8d2b66a09d1f3a41b8169982c4f31aa00cb6225