CFITSIO through 4.7.0 Heap Out-of-Bounds Read via Negative ZDITHER0 Seed

{
                    "vendor": "HEASARC",
                    "product": "cfitsio",
                    "defaultStatus": "unaffected",
                    "versions": [
                        {
                            "version": "0",
                            "lessThanOrEqual": "4.7.0",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ],
                    "collectionURL": "https://github.com",
                    "repo": "https://github.com/HEASARC/cfitsio"
                }