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Security Advisories: GSA_kwCzR0hTQS1qZjY2LTNxNzYtaDVwNc3jTg

Tenant and Verifier might not use the same registrar data

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.

Permalink: https://github.com/advisories/GHSA-jf66-3q76-h5p5
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS1qZjY2LTNxNzYtaDVwNc3jTg
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Critical
Classification: General
Published: about 2 years ago
Updated: 8 months ago


CVSS Score: 9.1
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Identifiers: GHSA-jf66-3q76-h5p5, CVE-2022-1053
References: Repository: https://github.com/keylime/keylime
Blast Radius: 0.0

Affected Packages

pypi:keylime
Dependent packages: 0
Dependent repositories: 1
Downloads: 198 last month
Affected Version Ranges: < 6.4.0
Fixed in: 6.4.0
All affected versions: 6.3.1, 6.3.2
All unaffected versions: 6.4.0, 6.4.1, 6.4.2, 6.4.3, 6.5.0, 6.5.1, 6.5.2, 6.5.3, 6.6.0, 6.8.0, 7.0.0, 7.2.5, 7.3.0, 7.4.0, 7.5.0, 7.6.0, 7.7.0, 7.8.0, 7.9.0, 7.10.0