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1.5.6 Ensure prelink is not installed

Information

prelink is a program that modifies ELF shared libraries and ELF dynamically linked binaries in such a way that the time needed for the dynamic linker to perform relocations at startup significantly decreases.

The prelinking feature can interfere with the operation of AIDE, because it changes binaries. Prelinking can also increase the vulnerability of the system if a malicious user is able to compromise a common library such as libc.

Solution

Run the following command to restore binaries to normal:

# prelink -ua

Uninstall prelink using the appropriate package manager or manual installation:

# apt purge prelink

See Also

https://workbench.cisecurity.org/benchmarks/26891

Item Details

Category: ACCESS CONTROL, AUDIT AND ACCOUNTABILITY, CONFIGURATION MANAGEMENT

References: 800-53|AC-6(9), 800-53|AU-2, 800-53|AU-12, 800-53|CM-1, 800-53|CM-3, 800-53|CM-6, CSCv7|14.9

Plugin: Unix

Control ID: e56671206685157aa18ef7117a366c96d20d0e1ce542e582da9e0c87d45b88d8