Title

The noexec option must be added to the /tmp partition. (Cat II impact)

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".

Additional Identifiers

Rule ID: SV-218106r603264_rule

Vulnerability ID: V-218106

Group Title: SRG-OS-000095

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