{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-112377","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-10-19T16:30:42.240Z","datePublished":"2026-10-19T17:26:39.111Z","dateUpdated":"2026-10-20T17:39:42.185Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-10-19T17:26:39.111Z"},"datePublic":"2026-07-17T00:00:00.000Z","title":"CCC Attestation SIG attested-tls-poc through commit 731ca82 Attestation Relay Attack","descriptions":[{"lang":"en","value":"CCC Attestation SIG attested-tls-poc through commit 731ca82 fails to bind early attestation Evidence to the TLS connection, allowing attackers to relay valid Evidence from a genuine attester. Attackers holding an extracted attested TLS private key can forward the relying party's nonce to a genuine attester and replay its Evidence to impersonate the attested workload and intercept data."}],"tags":["unsupported-when-assigned"],"problemTypes":[{"descriptions":[{"lang":"en","description":"Origin Validation Error","cweId":"CWE-346","type":"CWE"}]}],"affected":[{"vendor":"CCC-Attestation","product":"attested-tls-poc","collectionURL":"https://github.com/CCC-Attestation/attested-tls-poc","packageURL":"pkg:github/ccc-attestation/attested-tls-poc","repo":"https://github.com/CCC-Attestation/attested-tls-poc","defaultStatus":"unaffected","versions":[{"version":"0","lessThanOrEqual":"731ca82ed533fc7a1092be980887ae2e34261da2","status":"affected","versionType":"git"}]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","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","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"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"NONE","baseScore":7.4,"baseSeverity":"HIGH"}}],"references":[{"url":"https://github.com/CCC-Attestation/attested-tls-poc/pull/58","tags":["patch","technical-description","issue-tracking"],"name":"Pull Request #58"},{"url":"https://github.com/CCC-Attestation/attested-tls-poc/tree/5b6c5374b3fe8b671906c8ab32f6134d9c3da26d/relay-attacks-formal","tags":["technical-description"]},{"url":"https://github.com/ionut-arm/mbedtls/blob/f4ac7593826a506fc509c83cad73786acab1d442/library/ssl_tls13_generic.c#L430-L436","tags":["technical-description"]},{"url":"https://datatracker.ietf.org/doc/draft-intra-handshake-fail/","tags":["technical-description"]},{"url":"https://github.com/muhammad-usama-sardar/intra-handshake.fail","tags":["technical-description"]},{"url":"https://github.com/CCC-Attestation/attested-tls-poc","tags":["product"]},{"name":"VulnCheck Advisory: CCC Attestation SIG attested-tls-poc through commit 731ca82 Attestation Relay Attack","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/ccc-attestation-sig-attested-tls-poc-through-commit-731ca82-attestation-relay-attack"}],"credits":[{"lang":"en","value":"Muhammad Usama Sardar","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-20T17:39:34.340105Z","id":"CVE-2026-112377","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-20T17:39:42.185Z"}}]}}