Privasys Go is a maintained fork of the Go programming language that adds RA-TLS support to crypto/tls. Prior to privasys-v0.5.1-go1.26.5, challenge-mode RA-TLS certificates bound quote ReportData to the certificate public key and client nonce but not 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 a handshake terminated by the attacker as an attested enclave connection.
This issue is fixed in privasys-v0.5.1-go1.26.5.
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:go
References 4
https://github.com/Privasys/go/commit/00a7d21ba53bba0ea09ac7a67eb2c6714e651700
security-advisories@github.com
https://github.com/Privasys/go/releases/tag/privasys-v0.5.1-go1.26.5
security-advisories@github.com
https://github.com/Privasys/go/security/advisories/GHSA-7jfw-53rm-phh2
security-advisories@github.com
https://privasys.org/blog/binding-attestation-to-the-tls-session
security-advisories@github.com