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Check: GEN003523

SUSE Linux Enterprise Server v11 for System z STIG: GEN003523 (in versions v1 r12 through v1 r9)

Title

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

Additional Identifiers

Rule ID: SV-45715r1_rule

Vulnerability ID: V-22407

Group Title: GEN003523

Expert Comments

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CCIs

CCIs tied to check.

Number	Definition
CCI-000225	The organization employs the concept of least privilege, allowing only authorized accesses for users (and processes acting on behalf of users) which are necessary to accomplish assigned tasks in accordance with organizational missions and business functions.

Controls

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

Number	Title
AC-6	Least Privilege