CWE-1224
Improper Restriction of Write-Once Bit Fields
2020-02-24
00h00 +00:00
00h00 +00:00
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Tên: Improper Restriction of Write-Once Bit Fields
The hardware design control register "sticky bits" or write-once bit fields are improperly implemented, such that they can be reprogrammed by software.
Thông tin chung
Chi tiết nền tảng
Các cách xuất hiện
Architecture and DesignImplementation : Such issues could be introduced during implementation of hardware design, since IP parameters and defaults are defined in HDL code and identified later during Testing or System Configuration phases.
Nền tảng áp dụng
Ngôn ngữ
Tên: Verilog (Undetermined)Tên: VHDL (Undetermined)
Công nghệ
Lớp: System on Chip (Undetermined)Hậu quả phổ biến
| Phạm vi | Tác động | Khả năng xảy ra |
|---|---|---|
| Confidentiality Integrity Availability Access Control | Varies by Context, Modify Memory Ghi chú: System configuration cannot be programmed in a secure way. Failure to implement write-once restrictions in hardware design can expose such registers to being re-programmed by software and written multiple times. For example, write-once fields could be implemented to only be write-protected if they have been set to value "1", wherein they would work as "write-1-once" and not "write-once". |
Các biện pháp giảm thiểu tiềm năng
Phases : Architecture and DesignDuring hardware design, all register write-once or sticky fields must be evaluated for proper configuration.
Phương pháp phát hiện
Automated Analysis
Use automated tools to test that values are not reprogrammable and that write-once fields lock on writing zeros.Ghi chú ánh xạ lỗ hổng
Lý do : This CWE entry is at the Base level of abstraction, which is a preferred level of abstraction for mapping to the root causes of vulnerabilities.Bình luận : Carefully read both the name and description to ensure that this mapping is an appropriate fit. Do not try to 'force' a mapping to a lower-level Base/Variant simply to comply with this preferred level of abstraction.
Mẫu tấn công liên quan
| ID CAPEC | Tên mẫu tấn công |
|---|---|
| CAPEC-680 | Exploitation of Improperly Controlled Registers
|
Gửi
| Tên | Tổ chức | Ngày | Ngày phát hành | Version |
|---|---|---|---|---|
| Arun Kanuparthi, Hareesh Khattri, Parbati Kumar Manna, Narasimha Kumar V Mangipudi | Intel Corporation | 4.0 |
Sửa đổi
| Tên | Tổ chức | Ngày | Bình luận |
|---|---|---|---|
| CWE Content Team | MITRE | updated Related_Attack_Patterns | |
| CWE Content Team | MITRE | updated Related_Attack_Patterns | |
| CWE Content Team | MITRE | updated Demonstrative_Examples | |
| CWE Content Team | MITRE | updated Relationships | |
| CWE Content Team | MITRE | updated Mapping_Notes | |
| CWE Content Team | MITRE | updated Detection_Factors, Potential_Mitigations, Weakness_Ordinalities | |
| CWE Content Team | MITRE | updated Background_Details, Common_Consequences, Description, Dimensions |
