CVE-2026-22696

描述

## Impact This vulnerability involves a critical gap in the cryptographic verification process within the dcap-qvl. The library fetches QE Identity collateral (including qe_identity, qe_identity_signature, and qe_identity_issuer_chain) from the PCCS. However, it skips to verify the QE Identity signature against its certificate chain and does not enforce policy constraints on the QE Report. ## Consequences An attacker can forge the QE Identity data to whitelist a malicious or non-Intel Quoting Enclave. This allows the attacker to forge the QE and sign untrusted quotes that the verifier will accept as valid. Effectively, this bypasses the entire remote attestation security model, as the verifier can no longer trust the entity responsible for signing the quotes. ## Who is impacted All deployments utilizing the dcap-qvl library for SGX or TDX quote verification are affected. ## Patches The vulnerability has been patched in dcap-qvl version 0.3.9. The fix implements the missing cryptographic verification for the QE Identity signature and enforces the required checks for MRSIGNER, ISVPRODID, and ISVSVN against the QE Report. Users of the `@phala/dcap-qvl-node` and `@phala/dcap-qvl-web` packages should switch to the pure JavaScript implementation, `@phala/dcap-qvl`. ## Workarounds There are no known workarounds for this vulnerability. Users must upgrade to the patched version to ensure that QE Identity collateral is properly verified. ## Credit This bug was reported by Rahul Saxena <[email protected]>.

如何修補 CVE-2026-22696

要修補 CVE-2026-22696,請將受影響套件升級到下列已修補版本。

• —升級至 0.3.9 或更新版本
• —升級至 0.3.9 或更新版本
• —未列出修補版本
• —未列出修補版本
• —升級至 0.3.9 或更新版本

CVE-2026-22696 正在被利用嗎?

低 — EPSS 為 0.0%,目前沒有觀察到大規模利用活動。