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1.5.4 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.

Rationale:

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

Run the following command to uninstall prelink:

# yum remove prelink

See Also

https://workbench.cisecurity.org/files/3490

Item Details

Category: CONFIGURATION MANAGEMENT, SYSTEM AND SERVICES ACQUISITION

References: 800-53|CM-1, 800-53|CM-2, 800-53|CM-6, 800-53|CM-7, 800-53|CM-7(1), 800-53|CM-9, 800-53|SA-3, 800-53|SA-8, 800-53|SA-10, CSCv7|14.9

Plugin: Unix

Control ID: 69aaeaca6c1fdd804186405256c56f19d4e2e2782fd623a4e6a1c295213c3306