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1.1.9 Ensure noexec option set on /var/tmp partition

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Information

The noexec mount option specifies that the filesystem cannot contain executable binaries. Since the /var/tmp filesystem is only intended for temporary file storage, set this option to ensure that users cannot run executable binaries from /var/tmp.

Solution

Edit the /etc/fstab file and add noexec to the fourth field (mounting options) for the /var/tmp partition. See the fstab(5) manual page for more information. Run the following command to remount /var/tmp: # mount -o remount,noexec /var/tmp

See Also

https://benchmarks.cisecurity.org/tools2/linux/CIS_Ubuntu_Linux_14.04_LTS_Benchmark_v2.0.0.pdf

Item Details

Category: ACCESS CONTROL

References: 800-53|AC-6

Plugin: Unix

Control ID: 4621ae767c41af9e85b0295445a2be434a69b1c5c6e924a684bd1419f31fe678