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XCCDF
Guide to the Secure Configuration of Ubuntu 20.04
System Settings
Installing and Maintaining Software
System and Software Integrity
Software Integrity Checking
Verify Integrity with RPM
Verify Integrity with RPM
An XCCDF Group - A logical subset of the XCCDF Benchmark
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Verify Integrity with RPM
The RPM package management system includes the ability to verify the integrity of installed packages by comparing the installed files with information about the files taken from the package metadata stored in the RPM database. Although an attacker could corrupt the RPM database (analogous to attacking the AIDE database as described above), this check can still reveal modification of important files. To list which files on the system differ from what is expected by the RPM database:
$ rpm -qVa
See the man page for
rpm
to see a complete explanation of each column.