CVE-2026-108268
enclave-os-virtual: RA-TLS challenge certificates were not bound to the TLS session
- State
- Published
- Severity
- 9.1 Critical
- Published
- Oct 9, 2026
- Updated
- Oct 13, 2026
- Reserved
- Oct 9, 2026
Description
Enclave OS Virtual runs container workloads inside confidential virtual machines with end-to-end attestation. Prior to tdx-v0.2.43 and tdx-gpu-v0.6.27, the TDX/GPU RA-TLS certificate issuer 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 tdx-v0.2.43 and tdx-gpu-v0.6.27.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.1 Critical | CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N | GitHub_M |
Weaknesses
- CWE-346 Origin Validation Error
Affected Products
| Product | Versions |
|---|---|
enclave-os-virtualPrivasys |
|
References
- https://github.com/Privasys/enclave-os-virtual/security/advisories/GHSA-p5fp-g94g-g9m9
- https://github.com/Privasys/enclave-os-virtual/commit/9a6be91e29f2b6738d0b77c33cd1ad5cd3d8a347
- https://github.com/Privasys/enclave-os-virtual/releases/tag/tdx-gpu-v0.6.27
- https://github.com/Privasys/enclave-os-virtual/releases/tag/tdx-v0.2.43
- https://privasys.org/blog/binding-attestation-to-the-tls-session
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