1.5.3 Ensure prelink is disabled

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

Uninstall prelink using the appropriate package manager or manual installation:

# apt purge prelink

See Also

https://workbench.cisecurity.org/files/3219

Item Details

Category: AUDIT AND ACCOUNTABILITY

References: 800-53|AU-3, CSCv7|14.9

Plugin: Unix

Control ID: 97ba99b98e0163e907de62bb3c83ab34e809ff23160837d328cf617aa596531b