CVE-2024-51997— trustee 授权问题漏洞

The Attestation Results Token can be arbitrarily modified without being detected in Trustee

Trustee is a set of tools and components for attesting confidential guests and providing secrets to them. The ART (**Attestation Results Token**) token, generated by AS, could be manipulated by MITM attacker, but the verifier (CoCo Verification Demander like KBS) could still verify it successfully. In the payload of ART token, the ‘jwk’ could be replaced by attacker with his own pub key. Then attacker can use his own corresponding private key to sign the crafted ART token. Based on current code implementation (v0.8.0), such replacement and modification can not be detected. This issue has been addressed in version 0.8.2 and all users are advised to upgrade. There are no known workarounds for this vulnerability.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

认证机制不恰当

trustee 授权问题漏洞

trustee是Confidential Containers开源的一个组件。 trustee 0.8.2版本之前存在授权问题漏洞，该漏洞源于由 AS 生成的 ART（**Attestation Results Token**）令牌可能被 MITM 攻击者操纵，但验证者（CoCo Verification Demander 如 KBS）仍可成功验证。

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