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

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-22406	GEN003522	SV-64433r1_rule	ECLP-1	Low

Description
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.

STIG	Date
Oracle Linux 5 Security Technical Implementation Guide	2015-03-26

Details

Check Text ( C-52867r2_chk )
Determine the kernel core dump data directory and check its permissions. Procedure: Examine /etc/kdump.conf. The "path" parameter, which defaults to /var/crash, determines the path relative to the crash dump device. The crash device is specified with a filesystem type and device, such as "ext3 /dev/sda2". Using this information, determine where this path is currently mounted on the system. # ls -l If the directory has a mode more permissive than 0700, this is a finding.

Check Text ( C-52867r2_chk )

Determine the kernel core dump data directory and check its permissions.

Procedure:
Examine /etc/kdump.conf. The "path" parameter, which defaults to /var/crash, determines the path relative to the crash dump device. The crash device is specified with a filesystem type and device, such as "ext3 /dev/sda2". Using this information, determine where this path is currently mounted on the system.

# ls -l

If the directory has a mode more permissive than 0700, this is a finding.

Fix Text (F-55045r2_fix)
Change the group-owner of the kernel core dump data directory. # chmod 0700