Detections
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7.1.22 Ensure the /bin /sbin /usr/bin /usr/sbin /usr/local/bin and /usr/local/sbin directories are mode 0755 or more restrictive

Information

System commands must have mode "0755" or less permissive.

If the operating system were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process.

This requirement applies to operating systems with software libraries that are accessible and configurable, as in the case of interpreted languages. Software libraries also include privileged programs that execute with escalated privileges. Only qualified and authorized individuals will be allowed to obtain access to information system components for purposes of initiating changes, including upgrades and modifications.

Solution

Configure the system commands to be protected from unauthorized access.

Run the following command, replacing "[FILE]" with any system command with a mode more permissive than "0755".

# chmod 0755 [FILE]

See Also

https://workbench.cisecurity.org/benchmarks/19886

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-5, 800-53|CM-5(6), CAT|II, CSCv7|14.6, Rule-ID|SV-230257r792862_rule, Vuln-ID|V-230257

Plugin: Unix

Control ID: 3da3a05e2a2e68ef6633a7a2833a31db98981c335efb338b9be35162a3b59244