The SUSE operating system tool zypper must have gpgcheck enabled.

From SLES 12 Security Technical Implementation Guide

Part of SRG-OS-000366-GPOS-00153

Associated with: CCI-001749

SV-91857r2_rule The SUSE operating system tool zypper must have gpgcheck enabled.

Vulnerability discussion

Changes to any software components can have significant effects on the overall security of the SUSE operating system. This requirement ensures the software has not been tampered with and has been provided by a trusted vendor.Accordingly, patches, service packs, device drivers, or SUSE operating system components must be signed with a certificate recognized and approved by the organization.Verifying the authenticity of the software prior to installation validates the integrity of the patch or upgrade received from a vendor. This ensures the software has not been tampered with and that it has been provided by a trusted vendor. Self-signed certificates are disallowed by this requirement. The SUSE operating system should not have to verify the software again. This requirement does not mandate DoD certificates for this purpose; however, the certificate used to verify the software must be from an approved Certification Authority (CA).

Check content

Verify that the SUSE operating system tool zypper has pgpcheck enabled. Check that zypper has gpgcheck enabled with the following command: # cat /etc/zypp/zypp.conf | grep -i gpgcheck gpgcheck = 1 If "gpgcheck" is set to "0", "off", "no", or "false", this is a finding.

Fix text

Configure that the SUSE operating system tool zypper to enable pgpcheck by editing or adding the following line to "/etc/zypp/zypp.conf": gpgcheck = 1

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