CVE-2026-119344: falha crítica em ultravioletrs cocos
Cocos Intra-handshake attested TLS implementation is vulnerable to Diversion Attacks
Publicada em
Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.
28Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 9.1epss 0.3%
Cocos AI is a confidential computing system for AI. In version 0.8.2 and earlier, Cocos AI accepts trusted execution environment attestation Evidence when firmware patch levels and software measurements match, without binding the Evidence to an allowed platform owner or unique machine identity and without enforcing revocation. A remote attacker who controls or compromises another platform trusted by the same verifier can substitute valid Evidence from that platform and cause authorization of the wrong platform. This vulnerability is addressed in 0.9.0. However, this vulnerability can't be patched in source code alone, since the vulnerability arises from the confidential computing threat model itself.
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
Produtos afetados
ultravioletrs · cocosCVEs relacionadas — ultravioletrs cocos
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CVE-2026-92702CRITICALCocos AI: Intra-handshake attested TLS implementation can accept Evidence with nil, empty, or omitted reportData in the AMD SEV-SNP pathEPSS 0.3%CVE-2026-92701CRITICALCocos AI: Intra-handshake attested TLS implementation is vulnerable to session-misbinding attacks for Intel TDX verifier pathEPSS 0.2%CVE-2026-119345HIGHCocos AI Intra-handshake attested TLS implementation is vulnerable to TOCTOU AttacksEPSS 0.1%CVE-2026-33697HIGHCoCoS attested TLS is vulnerable to relay attacks via extracted ephemeral TLS keysEPSS 0.1%
Referências
https://dl.acm.org/doi/10.1145/3779208.3785387https://doi.org/10.1145/3779208.3785387https://github.com/ultravioletrs/cocos/releases/tag/v0.9.0https://github.com/ultravioletrs/cocos/security/advisories/GHSA-v5m8-5wxc-vjgphttps://www.intel.com/content/www/us/en/developer/articles/technical/software-security-guidance/technical-documentation/platform-ownership-endorsements.html