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CVE-2026-112377

CCC Attestation SIG attested-tls-poc through commit 731ca82 Attestation Relay Attack

Published
Last modified
Status
published
Known exploitation
Not listed in CISA KEV
Fix
Fix or patch referenced
Public exploit
None on Exploit-DB
CISA SSVC
  • Exploitation: none
  • Automatable: no
  • Technical impact: total
?

Decision points from CISA's Vulnrichment, assessed (SSVC 2.0.3).

SSVC documentation

Summary

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.

Affected versions

  • CCC-Attestation attested-tls-poc

    through 731ca82ed533fc7a1092be980887ae2e34261da2

References 7

GitHub · CCC-Attestation/attested-tls-poc

GitHub · ionut-arm/mbedtls

datatracker.ietf.org

GitHub · muhammad-usama-sardar/intra-handshake.fail

vulncheck.com