The kernel core dump data directory must not have an extended ACL.

From SUSE Linux Enterprise Server v11 for System z Security Technical Implementation Guide

Associated with: CCI-000225

SV-45715r1_rule The kernel core dump data directory must not have an extended ACL.

Vulnerability discussion

Kernel core dumps may contain the full contents of system memory at the time of the crash. As the system memory may contain sensitive information, it must be protected accordingly. If there is an extended ACL for the kernel core dump data directory, unauthorized users may be able to view or to modify kernel core dump data files.

Check content

Determine the kernel core dump data directory and check its permissions. # ls -ld /var/crash If the permissions include a '+' the file has an extended ACL, this is a finding.

Fix text

Remove the extended ACL from the file. # setfacl --remove-all /var/crash

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