Title

Kernel core dumps must be disabled unless needed. (Cat II impact)

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 savecore is not used. # dumpadm | grep 'Savecore enabled' If the value is true, this is a finding. OR # grep DUMPADM_ENABLE /etc/dumpadm.conf If the value is yes, this is a finding.

Fix Text

Disable savecore. # dumpadm -n

Additional Identifiers

Rule ID: SV-227786r603266_rule

Vulnerability ID: V-227786

Group Title: SRG-OS-000480

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.