CVE-2022-1053

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,

Category

9.1
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.18%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org
Affected: n/a keylime
Published at:
Updated at:

References

Link Tags
https://github.com/keylime/keylime/commit/bd5de712acdd77860e7dc58969181e16c7a8dc5d third party advisory patch
https://bugzilla.redhat.com/show_bug.cgi?id=2065024%2C
https://github.com/keylime/keylime/security/advisories/GHSA-jf66-3q76-h5p5%2C
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A7WAKVXM7L5D2DUACV6EHA6EJNAX2GVL/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WEW2PAXO5YGLDLPG45YV2OPLJXJSCECQ/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RF6QHU4UGSBATC3HOOE7OP66CYVTR7CV/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2022-1053?
CVE-2022-1053 has been scored as a critical severity vulnerability.
How to fix CVE-2022-1053?
To fix CVE-2022-1053, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-1053 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-1053 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-1053?
CVE-2022-1053 affects n/a keylime.
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