Moritz Lipp

An issue was discovered in the SCONE Confidential Computing Platform, where the lack of pointer-alignment logic in ` scone dispatch` and other entry functions allows a local attacker to access unauthorized information, also known as an "AEPIC Leak". This issue affects the Intel SGX platform.

The issue is related to improper isolation of shared resources in some Intel(R) Processors, which may allow a privileged user to potentially enable information disclosure via local access. This is caused by an architectural flaw that allows access to uninitialized data left in the Advanced Programmable Interrupt Controller (APIC) registers after previous operations. The problem affects systems using the Software Guard Extensions (SGX) technology.

A timing and power-based side channel attack leveraging the x86 PREFETCH instructions on some AMD CPUs could potentially result in leaked kernel address space information. This issue is related to a Meltdown-type attack, which was initially thought not to affect AMD processors. The attack may allow an attacker to disclose kernel address space information using a side channel.

The issue allows guest OS administrators to obtain sensitive information, such as AES keys from outside the guest, via a side-channel attack on a power/energy monitoring interface, also known as a "Platypus" attack.

The issue is related to cleanup errors in some data cache evictions for some Intel(R) Processors, which may allow an authenticated user to potentially enable information disclosure via local access. This is caused by a data leak from the L1D cache. The vulnerability can be exploited to disclose protected information. Researchers have found a new speculative execution vulnerability in Intel CPUs that could let attackers leak targeted sensitive data from the OS kernel, co-resident virtual machines, and even from Intel's secured SGX enclave.

The issue is related to Microarchitectural Data Sampling Uncacheable Memory (MDSUM) on some microprocessors that utilize speculative execution. This may allow an authenticated user with local access to potentially enable information disclosure via a side channel. An attacker with local access to a targeted system may exploit this issue to obtain data on the targeted system, causing some information leakage.

The issue is related to Microarchitectural Fill Buffer Data Sampling (MFBDS), which may allow an authenticated user to potentially enable information disclosure via a side channel with local access. This is due to the speculative execution utilized by some microprocessors.