{"id":"CVE-2022-3675","aliases":["EUVD-2022-43034","GHSA-747q-wq4p-22g3"],"status":"published","title":"Fedora CoreOS supports setting a GRUB bootloader password using a Butane config. When this...","description":"Fedora CoreOS supports setting a GRUB bootloader password\nusing a Butane config. When this feature is enabled, GRUB requires a password to access the\nGRUB command-line, modify kernel command-line arguments, or boot\nnon-default OSTree deployments.  Recent Fedora CoreOS releases have a\nmisconfiguration which allows booting non-default OSTree deployments\nwithout entering a password.  This allows someone with access to the\nGRUB menu to boot into an older version of Fedora CoreOS, reverting\nany security fixes that have recently been applied to the machine.  A\npassword is still required to modify kernel command-line arguments and\nto access the GRUB command line.","severity":{"version":"3.1","score":2.6,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-08","score":0.00185,"percentile":0.08094,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20","CWE-306","CWE-862"],"published":"2022-11-03T17:25:02Z","modified":"2026-06-17T04:59:59Z","products":[{"vendor":"fedora project","product":"coreos"},{"vendor":"redhat","product":"fedora_coreos"}],"references":[{"url":"https://github.com/coreos/fedora-coreos-tracker/issues/1333","tags":["issue-tracking","x_transferred","Issue Tracking","Third Party Advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/coreos-status@lists.fedoraproject.org/thread/NHUCNH5Y4UH5DPUCXISYXXVA563TLFEJ/","tags":["release-notes","x_transferred","Mailing List","Vendor Advisory"]},{"url":"https://docs.fedoraproject.org/en-US/fedora-coreos/grub-password/","tags":["related","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-3675"},{"url":"https://github.com/advisories/GHSA-747q-wq4p-22g3"}],"sources":{"cve":[{"id":"CVE-2022-3675","description":"Fedora CoreOS supports setting a GRUB bootloader password\nusing a Butane config. When this feature is enabled, GRUB requires a password to access the\nGRUB command-line, modify kernel command-line arguments, or boot\nnon-default OSTree deployments.  Recent Fedora CoreOS releases have a\nmisconfiguration which allows booting non-default OSTree deployments\nwithout entering a password.  This allows someone with access to the\nGRUB menu to boot into an older version of Fedora CoreOS, reverting\nany security fixes that have recently been applied to the machine.  A\npassword is still required to modify kernel command-line arguments and\nto access the GRUB command line.\n\n\n\n","status":"published","published":"2022-11-03T17:25:02.823Z","modified":"2025-05-02T18:53:10.153Z","cvss":[{"version":"3.1","score":2.6,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N","level":"low","assessor":"cna"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:34:32.843656Z"}],"euvd":[{"id":"EUVD-2022-43034","description":"Fedora CoreOS supports setting a GRUB bootloader password\nusing a Butane config. When this feature is enabled, GRUB requires a password to access the\nGRUB command-line, modify kernel command-line arguments, or boot\nnon-default OSTree deployments.  Recent Fedora CoreOS releases have a\nmisconfiguration which allows booting non-default OSTree deployments\nwithout entering a password.  This allows someone with access to the\nGRUB menu to boot into an older version of Fedora CoreOS, reverting\nany security fixes that have recently been applied to the machine.  A\npassword is still required to modify kernel command-line arguments and\nto access the GRUB command line.\n\n\n\n","status":"published","published":"2022-11-03T17:25:02Z","modified":"2025-05-02T18:53:10Z","cvss":[{"version":"3.1","score":2.6,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N","level":"low"}],"updated_at":"2026-11-02T20:51:55.340761Z"}],"ghsa":[{"id":"GHSA-747q-wq4p-22g3","title":"Fedora CoreOS supports setting a GRUB bootloader password using a Butane config. When this...","description":"Fedora CoreOS supports setting a GRUB bootloader password using a Butane config. When this feature is enabled, GRUB requires a password to access the GRUB command-line, modify kernel command-line arguments, or boot non-default OSTree deployments. Recent Fedora CoreOS releases have a misconfiguration which allows booting non-default OSTree deployments without entering a password. This allows someone with access to the GRUB menu to boot into an older version of Fedora CoreOS, reverting any security fixes that have recently been applied to the machine. A password is still required to modify kernel command-line arguments and to access the GRUB command line.","status":"published","published":"2022-11-03T19:00:23Z","modified":"2023-07-21T21:30:29Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-20","CWE-306","CWE-862"],"updated_at":"2026-11-02T14:54:43.067561Z"}],"nvd":[{"id":"CVE-2022-3675","description":"Fedora CoreOS supports setting a GRUB bootloader password\nusing a Butane config. When this feature is enabled, GRUB requires a password to access the\nGRUB command-line, modify kernel command-line arguments, or boot\nnon-default OSTree deployments.  Recent Fedora CoreOS releases have a\nmisconfiguration which allows booting non-default OSTree deployments\nwithout entering a password.  This allows someone with access to the\nGRUB menu to boot into an older version of Fedora CoreOS, reverting\nany security fixes that have recently been applied to the machine.  A\npassword is still required to modify kernel command-line arguments and\nto access the GRUB command line.\n\n\n\n","status":"published","published":"2022-11-03T18:15:14.627Z","modified":"2026-06-17T04:59:59.683Z","cvss":[{"version":"3.1","score":2.6,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N","level":"low","assessor":"secondary"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-20","CWE-306"],"updated_at":"2026-11-02T14:07:31.504574Z"}]}}