Advisories for Nuget/Open-Enclave package

2023

Improper Initialization

Open Enclave is a hardware-agnostic open source library for developing applications that utilize Hardware-based Trusted Execution Environments, also known as Enclaves. There are two issues that are mitigated in version 0.19.3. First, Open Enclave SDK does not properly sanitize the MXCSR register on enclave entry. This makes applications vulnerable to MXCSR Configuration Dependent Timing (MCDT) attacks, where incorrect MXCSR values can impact instruction retirement by at most one cycle, depending …

2021
2020

Files or Directories Accessible to External Parties

This vulnerability would not allow an attacker to elevate user rights directly, but it could be used to obtain information otherwise considered confidential in an enclave, which could be used in further compromises. The issue has been addressed and the current master branch. Users will need to to recompile their applications against the patched libraries to be protected from this vulnerability.

Covert Channel

In openenclave, enclaves that use x87 FPU operations are vulnerable to tampering by a malicious host application. By violating the Linux System V Application Binary Interface (ABI) for such operations, a host app can compromise the execution integrity of some x87 FPU operations in an enclave. Depending on the FPU control configuration of the enclave app and whether the operations are used in secret-dependent execution paths, this vulnerability may also …

2019

Information Disclosure

An information disclosure vulnerability exists when affected Open Enclave SDK versions improperly handle objects in memory, aka 'Open Enclave SDK Information Disclosure Vulnerability'.