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6.3.3.2 Ensure actions as another user are always logged

Warning! Audit Deprecated

This audit has been deprecated and will be removed in a future update.

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Information

sudo provides users with temporary elevated privileges to perform operations, either as the superuser or another user.

Creating an audit log of users with temporary elevated privileges and the operation(s) they performed is essential to reporting. Administrators will want to correlate the events written to the audit trail with the records written to sudo 's logfile to verify if unauthorized commands have been executed.

Solution

Create audit rules

Edit or create a file in the /etc/audit/rules.d/ directory, ending in .rules extension, with the relevant rules to monitor elevated privileges.

Example:

# printf "
-a always,exit -F arch=b64 -C euid!=uid -F auid!=unset -S execve -k user_emulation
-a always,exit -F arch=b32 -C euid!=uid -F auid!=unset -S execve -k user_emulation
" >> /etc/audit/rules.d/50-user_emulation.rules

Load audit rules

Merge and load the rules into active configuration:

# augenrules --load

Check if reboot is required.

# if [[ $(auditctl -s | grep "enabled") =~ "2" ]]; then printf "Reboot required to load rules\n"; fi

See Also

https://workbench.cisecurity.org/benchmarks/18209

Item Details

References: CSCv7|4.9

Plugin: Unix

Control ID: 4f0c20edfca982dedd6109138094b838fc8e8a08b554d8031f199c564dc1b74d