CWE-1224
Improper Restriction of Write-Once Bit Fields
2020-02-24
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指定 CWE 通知
随时了解指定 CWE 的变更。
名称: 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.
基本信息
背景详情
引入方式
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.
适用平台
编程语言
名称： Verilog (Undetermined)名称： VHDL (Undetermined)
技术
类： System on Chip (Undetermined)常见后果
| 影响范围 | 影响 | 可能性 |
|---|---|---|
| Confidentiality Integrity Availability Access Control | Varies by Context, Modify Memory 注意： 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". |
潜在缓解措施
Phases : Architecture and DesignDuring hardware design, all register write-once or sticky fields must be evaluated for proper configuration.
检测方法
Automated Analysis
Use automated tools to test that values are not reprogrammable and that write-once fields lock on writing zeros.漏洞映射说明
依据 : 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.备注 : 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.
相关攻击模式
| CAPEC ID | 攻击模式名称 |
|---|---|
| CAPEC-680 | Exploitation of Improperly Controlled Registers
|
提交记录
| 名称 | 组织 | 日期 | 发布日期 | Version |
|---|---|---|---|---|
| Arun Kanuparthi, Hareesh Khattri, Parbati Kumar Manna, Narasimha Kumar V Mangipudi | Intel Corporation | 4.0 |
修改记录
| 名称 | 组织 | 日期 | 备注 |
|---|---|---|---|
| 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 |
