CWE-1326: Missing Immutable Root of Trust in Hardware
A System-on-Chip (SoC) implements secure boot by verifying or authenticating signed boot code. The signing of the code is achieved by an entity that the SoC trusts. Before executing the boot code, the SoC verifies that the code or the public key with which the code has been signed has not been tampered with. The other data upon which the SoC depends are system-hardware settings in fuses such as whether "Secure Boot is enabled". These data play a crucial role in establishing a Root of Trust (RoT) to execute secure-boot flows.
One of the many ways RoT is achieved is by storing the code and data in memory or fuses. This memory should be immutable, i.e., once the RoT is programmed/provisioned in memory, that memory should be locked and prevented from further programming or writes. If the memory contents (i.e., RoT) are mutable, then an adversary can modify the RoT to execute their choice of code, resulting in a compromised secure boot.
Note that, for components like ROM, secure patching/update features should be supported to allow authenticated and authorized updates in the field.
Modes of Introduction
Phase | Note |
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Architecture and Design | |
Implementation | Such issues could be introduced during policy definition, hardware architecture, design, manufacturing, and/or provisioning. They can be identified later during testing or system configuration phases. |
Applicable Platforms
Type | Class | Name | Prevalence |
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Language | Not Language-Specific | ||
Operating_system | Not OS-Specific | ||
Architecture | Not Architecture-Specific | ||
Technology | Security Hardware | ||
Technology | Not Technology-Specific |
Common Attack Pattern Enumeration and Classification (CAPEC)
The Common Attack Pattern Enumeration and Classification (CAPECâ„¢) effort provides a publicly available catalog of common attack patterns that helps users understand how adversaries exploit weaknesses in applications and other cyber-enabled capabilities.
CAPEC at Mitre.orgCVEs Published
CVSS Severity
CVSS Severity - By Year
CVSS Base Score
# CVE | Description | CVSS | EPSS | EPSS Trend (30 days) | Affected Products | Weaknesses | Security Advisories | Exploits | PoC | Pubblication Date | Modification Date |
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# CVE | Description | CVSS | EPSS | EPSS Trend (30 days) | Affected Products | Weaknesses | Security Advisories | PoC | Pubblication Date | Modification Date |