Kernel core dumps must be disabled unless needed.

From Oracle Linux 5 Security Technical Implementation Guide

Associated with: CCI-000366

SV-64421r1_rule Kernel core dumps must be disabled unless needed.

Vulnerability discussion

Kernel core dumps may contain the full contents of system memory at the time of the crash. Kernel core dumps may consume a considerable amount of disk space and may result in Denial of Service by exhausting the available space on the target file system. The kernel core dump process may increase the amount of time a system is unavailable due to a crash. Kernel core dumps can be useful for kernel debugging.

Check content

Verify the kdump service is not running. Procedure: # service kdump status If "Kdump is operational" is returned, this is a finding.

Fix text

Disable kdump. # service kdump stop # chkconfig kdump off

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