CVE-2022-1053: Tenant and Verifier might not use the same… – CVSS 9.1 · Watchpost

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Tenant and Verifier might not use the same registrar data

緊急 9.1CVE-2022-1053 · GHSA-jf66-3q76-h5p5 · GHSA-jf66-3q76-h5p5, · 06/05/2022 公開 · 17/06/2026 更新

要点

CVE-2022-1053 は keylime, keylime (keylime) に影響する深刻度「緊急」 (CVSS 9.1) の脆弱性です。
今後30日間に悪用される確率（EPSS）：1.5%（全脆弱性の 73.9% より高い）。
対処：6.4.0 以降に更新してください。

パッケージ	影響を受けるバージョン	修正済みバージョン
keylime PyPI	`< 6.4.0`	`6.4.0`
keylime keylime	`< 6.4.0`	`6.4.0`

概要

Keylime does not enforce that the agent registrar data is the same when the tenant uses it for validation of the EK and identity quote and the verifier for validating the integrity quote. This allows an attacker to use one AK, EK pair from a real TPM to pass EK validation and give the verifier an AK of a software TPM. A successful attack breaks the entire chain of trust because a not validated AK is used by the verifier. This issue is worse if the validation happens first and then the agent gets added to the verifier because the timing is easier and the verifier does not validate the regcount entry being equal to 1. At this time, there are no known workaround.

NVD の説明

Keylime does not enforce that the agent registrar data is the same when the tenant uses it for validation of the EK and identity quote and the verifier for validating the integrity quote. This allows an attacker to use one AK, EK pair from a real TPM to pass EK validation and give the verifier an AK of a software TPM. A successful attack breaks the entire chain of trust because a not validated AK is used by the verifier. This issue is worse if the validation happens first and then the agent gets added to the verifier because the timing is easier and the verifier does not validate the regcount entry being equal to 1,

参考情報

keylime/keylime security advisory · WEB
nvd.nist.gov/vuln/detail/CVE-2022-1053 · ADVISORY
keylime/keylime commit bd5de71 · WEB
bugzilla.redhat.com/show_bug.cgi · WEB
GitHub Advisory GHSA-jf66-3q76-h5p5 · ADVISORY
keylime/keylime · PACKAGE
pypa/advisory-database · WEB
lists.fedoraproject.org/archives/list/[email protected]/message/A7WAKVXM7L5D2DUACV6EHA6EJNAX2GVL · WEB
lists.fedoraproject.org/archives/list/[email protected]/message/RF6QHU4UGSBATC3HOOE7OP66CYVTR7CV · WEB
lists.fedoraproject.org/archives/list/[email protected]/message/WEW2PAXO5YGLDLPG45YV2OPLJXJSCECQ

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