CVE-2022-1053: Keylime Tenant And Verifier Might Not Vulnerability

CRITICAL
Advisory Identifier: GHSA-jf66-3q76-h5p5
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CVSS 9.1
CWE-20
Published
Advisory Summary

CVE-2022-1053 is a CRITICAL (CVSS 9.1) tenant and verifier might not vulnerability (CWE-20: Improper Input Validation) affecting Keylime libraries in the PyPI ecosystem. The issue involves tenant and verifier might not use the same registrar data. Remediation is available by upgrading affected packages to version 6.4.0.

CVE-2022-1053 at a Glance

CVE Identifier CVE-2022-1053
GHSA Identifier GHSA-jf66-3q76-h5p5
Severity CRITICAL
CVSS v3.1 Base Score 9.1
CWE Classification CWE-20: Improper Input Validation
Affected Product Keylime
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 9.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability None (A:N)

How to Fix CVE-2022-1053

To remediate this vulnerability, upgrade all affected Keylime dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

keylime fixed: 6.4.0 
pip install keylime>=6.4.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show keylime

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2022-1053, inspect your installed packages using pip:

pip show keylime

Analyze the terminal output to locate any version of Keylime in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 6.4.0), your application is affected.

Note: The pip show keylime command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-20: Improper Input Validation, where the product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. In Keylime, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

CVE-2022-1053 Affected Keylime Versions

1 component(s)
Fixed Versions:
6.4.0
Product / Package Ecosystem Affected Versions Fixed Version
keylime
pypi/keylime
PyPI
< 6.4.0
6.4.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/keylime/keylime/security/advisories/GHSA-jf66-3q76-h5p5
NVD — CVE-2022-1053 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-1053
Security Fix Commit FIX COMMIT
https://github.com/keylime/keylime/commit/bd5de712acdd77860e7dc58969181e16c7a8dc5d
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=2065024
GitHub Advisory / Wiki ADVISORY
https://github.com/advisories/GHSA-jf66-3q76-h5p5
Keylime Source Repository REPOSITORY
https://github.com/keylime/keylime
Keylime Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/keylime/PYSEC-2022-184.yaml
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/A7WAKVXM7L5D2DUACV6EHA6EJNAX2GVL
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RF6QHU4UGSBATC3HOOE7OP66CYVTR7CV
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WEW2PAXO5YGLDLPG45YV2OPLJXJSCECQ

Frequently Asked Questions

What is CVE-2022-1053?
CVE-2022-1053 is a security vulnerability in Keylime involving Tenant and Verifier might not use the same registrar data under CWE-20: Improper Input Validation.
Which Keylime versions are affected?
Affected versions include releases prior to 6.4.0 across affected packages: keylime.
What version fixes CVE-2022-1053?
Upgrading to 6.4.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is keylime affected?
Yes, keylime is affected in releases prior to 6.4.0. Upgrade your dependency to 6.4.0 or later.
What is the CVSS score of CVE-2022-1053?
CVE-2022-1053 has a CVSS v3.1 base score of 9.1 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
What CWE is associated with CVE-2022-1053?
CVE-2022-1053 is classified under CWE-20: Improper Input Validation (The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.).
How can I check PyPI dependencies for CVE-2022-1053?
Run the dependency tree command: 'pip show keylime'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-jf66-3q76-h5p5",
  "modified" : "2026-03-30T19:47:11Z",
  "published" : "2022-05-05T15:59:35Z",
  "aliases" : [ "CVE-2022-1053" ],
  "summary" : "Tenant and Verifier might not use the same registrar data",
  "details" : "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.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "keylime"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "6.4.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/keylime/keylime/security/advisories/GHSA-jf66-3q76-h5p5"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-1053"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/keylime/keylime/commit/bd5de712acdd77860e7dc58969181e16c7a8dc5d"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2065024"
  }, {
    "type" : "ADVISORY",
    "url" : "https://github.com/advisories/GHSA-jf66-3q76-h5p5"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/keylime/keylime"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/keylime/PYSEC-2022-184.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/A7WAKVXM7L5D2DUACV6EHA6EJNAX2GVL"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RF6QHU4UGSBATC3HOOE7OP66CYVTR7CV"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WEW2PAXO5YGLDLPG45YV2OPLJXJSCECQ"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-20" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-05-05T15:59:35Z",
    "nvd_published_at" : "2022-05-06T17:15:00Z"
  }
}