Title

The kernel core dump data directory must have mode 0700 or less permissive. (Cat III impact)

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 the mode of the kernel core dump data directory is more permissive than 0700, unauthorized users may be able to view or to modify kernel core dump data files.

Check Content

Determine the kernel core dump data directory. # dumpadm | grep "Savecore directory" OR # grep DUMPADM_SAVDIR /etc/dumpadm.conf Check the permissions of the kernel core dump data directory. # ls -l [savecore directory] If the directory has a mode more permissive than 0700, this is a finding.

Fix Text

Change the group-owner of the kernel core dump data directory. # chmod 0700 [kernel core dump data directory]

Additional Identifiers

Rule ID: SV-227789r603266_rule

Vulnerability ID: V-227789

Group Title: SRG-OS-000480

Expert Comments

CCIs tied to check.

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