Detection of Error Condition Without Action Affecting gh package, versions <2.67.0-r0

Note: Versions mentioned in the description apply only to the upstream gh package and not the gh package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

gh is GitHub’s official command line tool. Starting in version 2.49.0 and prior to version 2.67.0, under certain conditions, a bug in GitHub's Artifact Attestation cli tool gh attestation verify causes it to return a zero exit status when no attestations are present. This behavior is incorrect: When no attestations are present, gh attestation verify should return a non-zero exit status code, thereby signaling verification failure. An attacker can abuse this flaw to, for example, deploy malicious artifacts in any system that uses gh attestation verify's exit codes to gatekeep deployments. Users are advised to update gh to patched version v2.67.0 as soon as possible.

• https://github.com/cli/cli/issues/10418
• https://github.com/cli/cli/pull/10421
• https://github.com/cli/cli/security/advisories/GHSA-fgw4-v983-mgp8