CWE-1317
Improper Access Control in Fabric Bridge
2020-12-10
00h00 +00:00
00h00 +00:00
指定 CWE 通知
随时了解指定 CWE 的变更。
名称: Improper Access Control in Fabric Bridge
The product uses a fabric bridge for transactions between two Intellectual Property (IP) blocks, but the bridge does not properly perform the expected privilege, identity, or other access control checks between those IP blocks.
基本信息
背景详情
引入方式
Architecture and DesignImplementation
适用平台
编程语言
类： Not Language-Specific (Undetermined)操作系统
类： Not OS-Specific (Undetermined)架构
类： Not Architecture-Specific (Undetermined)技术
名称： Processor Hardware (Undetermined)类： Not Technology-Specific (Undetermined)
常见后果
| 影响范围 | 影响 | 可能性 |
|---|---|---|
| Confidentiality Integrity Access Control Availability | DoS: Crash, Exit, or Restart, Bypass Protection Mechanism, Read Memory, Modify Memory | Medium |
观察示例
| 参考资料 | 描述 |
|---|---|
CVE-2019-6260 | Baseboard Management Controller (BMC) device implements Advanced High-performance Bus (AHB) bridges that do not require authentication for arbitrary read and write access to the BMC's physical address space from the host, and possibly the network [REF-1138]. |
潜在缓解措施
Phases : Architecture and DesignEnsure that the design includes provisions for access-control checks in the bridge for both upstream and downstream transactions.
Phases : Implementation
Implement access-control checks in the bridge for both upstream and downstream transactions.
检测方法
Simulation / Emulation
RTL simulation to ensure that bridge-access controls are implemented properly.有效性 : High
Formal Verification
Formal verification of bridge RTL to ensure that access control cannot be bypassed.有效性 : High
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-122 | Privilege Abuse
An adversary is able to exploit features of the target that should be reserved for privileged users or administrators but are exposed to use by lower or non-privileged accounts. Access to sensitive information and functionality must be controlled to ensure that only authorized users are able to access these resources. |
参考资料
REF-1138
CVE-2019-6260: Gaining control of BMC from the host processorStewart Smith.
https://www.flamingspork.com/blog/2019/01/23/cve-2019-6260:-gaining-control-of-bmc-from-the-host-processor/
REF-1381
aes0_wrapper.sv lines 72 - 78https://github.com/HACK-EVENT/hackatdac21/blob/b9ecdf6068445d76d6bee692d163fededf7a9d9b/piton/design/chip/tile/ariane/src/aes0/aes0_wrapper.sv#L72-L78
REF-1382
clint.sv line 71https://github.com/HACK-EVENT/hackatdac21/blob/b9ecdf6068445d76d6bee692d163fededf7a9d9b/piton/design/chip/tile/ariane/src/clint/clint.sv#L71C2-L71C36
REF-1383
Fix for clint.sv line 78https://github.com/HACK-EVENT/hackatdac21/blob/45a004368b5a31857008834d9780536f0764f055/piton/design/chip/tile/ariane/src/clint/clint.sv#L78
提交记录
| 名称 | 组织 | 日期 | 发布日期 | Version |
|---|---|---|---|---|
| Arun Kanuparthi, Hareesh Khattri, Parbati Kumar Manna | Intel Corporation | 4.3 |
修改记录
| 名称 | 组织 | 日期 | 备注 |
|---|---|---|---|
| CWE Content Team | MITRE | updated Observed_Examples | |
| CWE Content Team | MITRE | updated Applicable_Platforms | |
| CWE Content Team | MITRE | updated Applicable_Platforms | |
| CWE Content Team | MITRE | updated Demonstrative_Examples, Description, Detection_Factors, Name, Potential_Mitigations | |
| CWE Content Team | MITRE | updated Relationships | |
| CWE Content Team | MITRE | updated Mapping_Notes | |
| CWE Content Team | MITRE | updated Demonstrative_Examples, References | |
| CWE Content Team | MITRE | updated Weakness_Ordinalities | |
| CWE Content Team | MITRE | updated Background_Details, Demonstrative_Examples, Description |
