Title

The SLEM 5 tool zypper must have gpgcheck enabled. (Cat I impact)

Discussion

Changes to any software components can have significant effects on the overall security of SLEM 5. 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 SLEM 5 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. SLEM 5 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 SLEM 5 tool zypper has gpgcheck enabled with the following command: > grep -i '^gpgcheck' /etc/zypp/zypp.conf gpgcheck = on If "gpgcheck" is not set to "on", is commented out, or missing, this is a finding.

Fix Text

Configure that SLEM 5 tool zypper to enable gpgcheck. Add or modify the following line in the "/etc/zypp/zypp.conf" file: gpgcheck = on

Additional Identifiers

Rule ID: SV-261274r996312_rule

Vulnerability ID: V-261274

Group Title: SRG-OS-000366-GPOS-00153

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.