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Amazon Linux 2023 must have GPG signature verification enabled for all software repositories.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-273998AZLX-23-000125SV-273998r1119982_ruleCCI-003992high
Description
Changes to any software components can have significant effects on the overall security of Amazon Linux 2023. 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.
STIGDate
Amazon Linux 2023 Security Technical Implementation Guide2026-02-27

Related Frameworks

1 mapping across 3 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (1) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

CHG-04.2Signed Components
0.50
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (8) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AC-2(10)Shared and Group Account Credential Change
1.00
CM-14Signed Components
1.00
CM-5(3)Signed Components
1.00
CM-7(5)Authorized Software — Allow-by-exception
1.00
IA-2(5)Individual Authentication with Group Authentication
1.00
SC-23Session Authenticity
1.00
SC-3Security Function Isolation
1.00
SI-2Flaw Remediation
1.00
CCI1 mapping
CCI-003992
1.00

Details

Check Text (C-273998r1119982_chk)

Verify Amazon Linux 2023 software repositories enforce a signature check on the packages prior to allowing installation with the following command: $ grep -w gpgcheck /etc/yum.repos.d/*.repo | more /etc/yum.repos.d/amazonlinux.repo:gpgcheck=1 /etc/yum.repos.d/amazonlinux.repo:gpgcheck=1 /etc/yum.repos.d/amazonlinux.repo:gpgcheck=1 /etc/yum.repos.d/kernel-livepatch.repo:gpgcheck=1 /etc/yum.repos.d/kernel-livepatch.repo:gpgcheck=1 If any repository has "gpgcheck=0" or "False", or if the option is commented out, this is a finding.

Fix Text (F-77994r1119981_fix)

Configure Amazon Linux 2023 to verify the signature of packages from a repository prior to installation by setting the following option in the "/etc/yum.repos.d/[your_repo_name].repo" file: gpgcheck=1