{"id":"CVE-2026-108268","state":"PUBLISHED","title":"enclave-os-virtual: RA-TLS challenge certificates were not bound to the TLS session","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.","publishedAt":"2026-10-09T21:13:33.595Z","updatedAt":"2026-10-13T11:31:04.583Z","severity":{"score":9.1,"label":"Critical","version":"4.0","vector":"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","source":"GitHub_M"},"assigner":"GitHub_M","products":["Privasys enclave-os-virtual"],"affected":[{"vendor":"Privasys","product":"enclave-os-virtual","versions":[{"version":"< tdx-v0.2.43","status":"affected"},{"version":"< tdx-gpu-v0.6.27","status":"affected"}]}],"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"],"weaknesses":["CWE-346"],"ingestedAt":"2026-10-29T20:10:33.477Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/108xxx/CVE-2026-108268.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-108268","state":"PUBLISHED","datePublished":"2026-10-09T21:13:33.595Z","dateUpdated":"2026-10-13T11:31:04.583Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-10-09T17:33:15.410Z"},"containers":{"cna":{"title":"enclave-os-virtual: RA-TLS challenge certificates were not bound to the TLS session","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Privasys","product":"enclave-os-virtual","versions":[{"version":"< tdx-v0.2.43","status":"affected"},{"version":"< tdx-gpu-v0.6.27","status":"affected"}]}],"references":[{"url":"https://github.com/Privasys/enclave-os-virtual/security/advisories/GHSA-p5fp-g94g-g9m9","name":"https://github.com/Privasys/enclave-os-virtual/security/advisories/GHSA-p5fp-g94g-g9m9","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/Privasys/enclave-os-virtual/commit/9a6be91e29f2b6738d0b77c33cd1ad5cd3d8a347","name":"https://github.com/Privasys/enclave-os-virtual/commit/9a6be91e29f2b6738d0b77c33cd1ad5cd3d8a347","tags":["x_refsource_MISC"]},{"url":"https://github.com/Privasys/enclave-os-virtual/releases/tag/tdx-gpu-v0.6.27","name":"https://github.com/Privasys/enclave-os-virtual/releases/tag/tdx-gpu-v0.6.27","tags":["x_refsource_MISC"]},{"url":"https://github.com/Privasys/enclave-os-virtual/releases/tag/tdx-v0.2.43","name":"https://github.com/Privasys/enclave-os-virtual/releases/tag/tdx-v0.2.43","tags":["x_refsource_MISC"]},{"url":"https://privasys.org/blog/binding-attestation-to-the-tls-session","name":"https://privasys.org/blog/binding-attestation-to-the-tls-session","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":9.1,"baseSeverity":"CRITICAL","vectorString":"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","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-346","lang":"en","description":"CWE-346: Origin Validation Error","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-10-09T21:13:33.595Z"},"source":{"advisory":"GHSA-p5fp-g94g-g9m9","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-13T11:29:30.644389Z","id":"CVE-2026-108268","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-13T11:31:04.583Z"}}]}}}