CVEvulnerability

CVE-2022-1053

9.1 CRITICAL Published 2022-05-06 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2022-05-06
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.1 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS 2.0 ([email protected])
6.4 MEDIUM — AV:N/AC:L/Au:N/C:P/I:P/A:N
Weaknesses
CWE-20

Description

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,

Affected configurations

• keylime keylime (< 6.4.0) • fedoraproject fedora 34 • fedoraproject fedora 35 • fedoraproject fedora 36

Related

Weakness · CWE (1)

  • CWE-20 Improper Input Validation weakness

References