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V-261282

CAT II (Medium)

SLEM 5 file systems that are being imported via Network File System (NFS) must be mounted to prevent binary files from being executed.

Rule ID

SV-261282r996328_rule

STIG

SUSE Linux Enterprise Micro (SLEM) 5 Security Technical Implementation Guide

Version

V1R4

CCIs

CCI-000366

Discussion

The "noexec" mount option causes the system to not execute binary files. This option must be used for mounting any file system not containing approved binary files, as they may be incompatible. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

Check Content

Verify SLEM 5 file systems that are being NFS exported are mounted with the "noexec" option with the following command:

     > grep nfs /etc/fstab
     UUID=e06097bb-cfcd-437b-9e4d-a691f5662a7d /store nfs rw,noexec 0 0

If a file system found in "/etc/fstab" refers to NFS and it does not have the "noexec" option set, and use of NFS exported binaries is not documented with the information system security officer (ISSO) as an operational requirement, this is a finding.

Fix Text

Configure SLEM 5 "/etc/fstab" file to use the "noexec" option on file systems that are being exported via NFS.