The noexec option must be added to the /tmp partition.

From Red Hat Enterprise Linux 6 Security Technical Implementation Guide

Associated with: CCI-000381

SV-71919r1_rule The noexec option must be added to the /tmp partition.

Vulnerability discussion

Allowing users to execute binaries from world-writable directories such as "/tmp" should never be necessary in normal operation and can expose the system to potential compromise.

Check content

To verify that binaries cannot be directly executed from the /tmp directory, run the following command: $ grep '\s/tmp' /etc/fstab The resulting output will show whether the /tmp partition has the "noexec" flag set. If the /tmp partition does not have the noexec flag set, this is a finding.

Fix text

The "noexec" mount option can be used to prevent binaries from being executed out of "/tmp". Add the "noexec" option to the fourth column of "/etc/fstab" for the line which controls mounting of "/tmp".

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