Title

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

The root role is required. This check applies to the global zone only. Determine the zone that you are currently securing. # zonename If the command output is "global", this check applies. Determine the location of the system dump directory. # dumpadm | grep directory Check the permissions of the kernel core dump data directory. # ls -ld [savecore directory] If the directory has a mode more permissive than 0700 (rwx --- ---), this is a finding.

Fix Text

The root role is required. This action applies to the global zone only. Determine the zone that you are currently securing. # zonename If the command output is "global", this action applies. Determine the location of the system dump directory. # dumpadm | grep directory Change the group-owner of the kernel core dump data directory. # chmod 0700 [savecore directory]

Additional Identifiers

Rule ID: SV-216216r603268_rule

Vulnerability ID: V-216216

Group Title: SRG-OS-000480

Expert Comments

CCIs tied to check.

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