covert storage channel

{
  "id": "MLC-T-CYB-000992",
  "term": "covert storage channel",
  "field": "Cybersecurity",
  "definition": "1. Covert channel involving the direct or indirect writing to a storage location by one process and the direct or indirect reading of the storage location by another process. Covert storage channels typically involve a finite resource (e.g., sectors on a disk) that is shared by two subjects at different security levels.\n\n2. A system feature that enables one system entity to signal information to another entity by directly or indirectly writing a storage location that is later directly or indirectly read by the second entity.\n\n3. A system feature that enables one system entity to signal information to another entity by directly or indirectly writing to a storage location that is later directly or indirectly read by the second entity.",
  "see_also": [
    "covert channel"
  ],
  "references": [
    "NIST SP 800-53 Rev. 4 [Superseded] from CNSSI 4009",
    "CNSSI 4009-2015 from IETF RFC 4949 Ver 2; CNSSI 4009-2022 from IETF RFC 4949 Ver 2",
    "NIST SP 800-53 Rev. 5 from CNSSI 4009-2015, CNSSI 4009-2022",
    "NIST CSRC Glossary"
  ],
  "url": "https://mlchart.com/terminology/cybersecurity/covert-storage-channel/"
}