We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Core Escalation: Unleashing the Power of Cross-Core Attacks on Heterogeneous System
Explore the power of cross-core attacks on heterogeneous systems, uncovering vulnerabilities in Huawei smartphones and demonstrating attack vectors and potential escalations.
- Core escalation relies on cross-core attacks, where malware on one core attacks another core to gain access to higher privileges.
- IOMCU and LPMCU are two vulnerable cores in Huawei smartphones, and exploiting them can lead to arbitrary code execution.
- The ISP core is also vulnerable due to a lack of encryption and verification of firmware updates.
- Shared memory is a common mechanism used by different cores, and exploiting it can lead to data breaches and privilege escalation.
- The DMA transfer function can be used to override large amounts of data, making it a potential attack vector.
- The CFGBus is a critical component that enables communication between cores, and exploiting its controls can lead to privilege escalation.
- TEE OS is a proprietary operating system developed by Huawei, and its vulnerabilities can be exploited for privilege escalation and data breaches.
- The secure world is divided into different privilege levels, and exploiting vulnerabilities in one level can compromise the entire secure world.
- Cross-core communication can be exploited to gain access to higher privileges and compromise the secure world.
- The ACPU and ISP cores have different privilege levels, and exploiting vulnerabilities in one core can compromise the secure world.
- The LPMCU core has a mailbox handler that can be exploited to gain arbitrary code execution.
- The DMSS and CFGBus are two prevalent mechanisms used for cross-core communication.
- The IOMCU core has a proprietary firmware that is vulnerable to attacks.
- The ISP core has a secure signal that can be exploited to gain access to higher privileges.
- The DMA transfer function can be used to override large amounts of data, making it a potential attack vector.