Enclave OS Mini is a Rust-based runtime for confidential applications inside Intel SGX enclaves. Prior to wasm-v0.40.0, the SGX runtime's RA-TLS challenge certificate path placed the certificate public-key hash and client nonce in quote ReportData but omitted a value bound to the active TLS session. An attacker who obtained an enclave TLS private key could relay a genuine quote onto another connection, causing a relying party to accept an attacker-terminated connection as the attested enclave.
This issue is fixed in wasm-v0.40.0.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products
privasys:enclave-os-mini
References 4
https://github.com/Privasys/enclave-os-mini/commit/9f541c849ef733d2df2851a666f3…
security-advisories@github.com
https://github.com/Privasys/enclave-os-mini/releases/tag/wasm-v0.40.0
security-advisories@github.com
https://github.com/Privasys/enclave-os-mini/security/advisories/GHSA-49qm-4pj3-…
security-advisories@github.com
https://privasys.org/blog/binding-attestation-to-the-tls-session
security-advisories@github.com