The system package management tool must cryptographically verify the authenticity of all software packages during installation.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-50709	OL6-00-000015	SV-64915r1_rule		Low

Description
Ensuring all packages' cryptographic signatures are valid prior to installation ensures the provenance of the software and protects against malicious tampering.

STIG	Date
Oracle Linux 6 Security Technical Implementation Guide	2019-03-20

Details

Check Text ( C-53195r1_chk )
To determine whether "yum" has been configured to disable "gpgcheck" for any repos, inspect all files in "/etc/yum.repos.d" and ensure the following does not appear in any sections: gpgcheck=0 A value of "0" indicates that "gpgcheck" has been disabled for that repo. If GPG checking is disabled, this is a finding. If the "yum" system package management tool is not used to update the system, verify with the SA that installed packages are cryptographically signed.

Check Text ( C-53195r1_chk )

To determine whether "yum" has been configured to disable "gpgcheck" for any repos, inspect all files in "/etc/yum.repos.d" and ensure the following does not appear in any sections:

gpgcheck=0

A value of "0" indicates that "gpgcheck" has been disabled for that repo.
If GPG checking is disabled, this is a finding.

If the "yum" system package management tool is not used to update the system, verify with the SA that installed packages are cryptographically signed.

Fix Text (F-55503r1_fix)
To ensure signature checking is not disabled for any repos, remove any lines from files in "/etc/yum.repos.d" of the form: gpgcheck=0