CWE-1312 - Missing Protection for Mirrored Regions in On-Chip Fabric Firewall
CWE-1312
- Abstraction:
- Base
- Structure:
- Simple
- Status:
- Draft
- Weakness Name
Missing Protection for Mirrored Regions in On-Chip Fabric Firewall
- Description
The firewall in an on-chip fabric protects the main addressed region, but it does not protect any mirrored memory or memory-mapped-IO (MMIO) regions.
Few fabrics mirror memory and address ranges, where mirrored regions contain copies of the original data. This redundancy is used to achieve fault tolerance. Whatever protections the fabric firewall implements for the original region should also apply to the mirrored regions. If not, an attacker could bypass existing read/write protections by reading from/writing to the mirrored regions to leak or corrupt the original data.
- Common Consequences
Scope: Confidentiality, Integrity, Access Control
Impact: Modify Memory, Read Memory, Bypass Protection Mechanism
- Related Weaknesses
- Release Date:
- 2020-12-10
- Latest Modification Date:
- 2023-06-29
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