Detections
Analytics

1.318 ALMA-09-041160

Information

AlmaLinux OS 9 must prevent kernel profiling by nonprivileged users.

GROUP ID: V-269426
RULE ID: SV-269426r1117266

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://workbench.cisecurity.org/benchmarks/27039

Item Details

Category: SYSTEM AND COMMUNICATIONS PROTECTION

References: 800-53|SC-2, 800-53|SC-4, CCI|CCI-001082, CCI|CCI-001090, Rule-ID|SV-269426r1117266_rule, STIG-ID|ALMA-09-041160, Vuln-ID|V-269426

Plugin: Unix

Control ID: 64b2b25ed2391c68afa9be584e1b40736b857df51f724f148511b519270f82f3