Firmware verification fails to enforce required product binding
An otherwise authentic image is accepted for an incompatible product or security configuration despite required target restrictions.
Candidate CWE: CWE-20
Test hypothesis#
Using format-valid local fixtures, compare the correct SKU/board/security variant with a different owned variant while holding signature validity constant. Inspect the actual compatibility gate without flashing.
Evidence required#
Product identifiers, expected compatibility rule, verified manifest fields and acceptance stage; execution impact requires additional faithful evidence.
Rule out false positives#
Vendors may intentionally ship one image across several SKUs; names differing is not proof of incompatibility.
Playbook and command references#
- Firmware update and boot trust: signed bytes, product binding and rollback — Separate download trust, update authorization, image verification, rollback policy and boot enforcement using local artifacts.
Find the associated command snippets
Referenced by these target playbooks#
Report checklist#
- Capture the affected version, configuration, identities, and object ownership.
- Preserve a valid baseline and a negative control.
- Reproduce the forbidden data access, action, or state change on controlled fixtures.
- Explain the intended security rule and why the observed behavior violates it.
- State prerequisites, uncertainty, cleanup, and the smallest demonstrated impact.
Conditional ATT&CK mapping#
No direct ATT&CK mapping selected. Record the weakness and demonstrated impact without forcing an adversary-behavior classification. See the mapping guide.