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V-271525

CAT I (High)

OL 9 must have GPG signature verification enabled for all software repositories.

Rule ID

SV-271525r1091287_rule

STIG

Oracle Linux 9 Security Technical Implementation Guide

Version

V1R5

CCIs

CCI-003992

Discussion

Changes to any software components can have significant effects on the overall security of the operating system. This requirement ensures the software has not been tampered with and that it has been provided by a trusted vendor. All software packages must be signed with a cryptographic key recognized and approved by the organization. Verifying the authenticity of software prior to installation validates the integrity of the software package received from a vendor. This verifies the software has not been tampered with and that it has been provided by a trusted vendor.

Check Content

Verify that OL 9 software repositories defined in "/etc/yum.repos.d/" have been configured with "gpgcheck" enabled:

$ grep gpgcheck /etc/yum.repos.d/*.repo | more
gpgcheck = 1

If "gpgcheck" is not set to "1" for all returned lines, this is a finding.

Fix Text

Configure all software repositories defined in "/etc/yum.repos.d/" to have "gpgcheck" enabled:

$ sudo sed -i 's/gpgcheck\s*=.*/gpgcheck=1/g' /etc/yum.repos.d/*