The /etc/sysctl.conf file must have mode 0600 or less permissive.

From Red Hat Enterprise Linux 5 Security Technical Implementation Guide

Part of GEN000000-LNX00520

Associated with IA controls: ECLP-1

Associated with: CCI-000225

SV-37258r1_rule The /etc/sysctl.conf file must have mode 0600 or less permissive.

Vulnerability discussion

The sysctl.conf file specifies the values for kernel parameters to be set on boot. These settings can affect the system's security.

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Fix text

Use the chmod command to change the mode of the /etc/sysctl.conf file. # chmod 0600 /etc/sysctl.conf

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