RHSA-2023:5080
Vulnerability from csaf_redhat - Published: 2023-09-12 10:14 - Updated: 2025-11-21 18:44Summary
Red Hat Security Advisory: keylime security update
Severity
Moderate
Notes
Topic: An update for keylime is now available for Red Hat Enterprise Linux 9.
Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details: Keylime is a TPM based highly scalable remote boot attestation and runtime integrity measurement solution.
Security Fix(es):
* keylime: registrar is subject to a DoS against SSL connections (CVE-2023-38200)
* Keylime: challenge-response protocol bypass during agent registration (CVE-2023-38201)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A flaw was found in Keylime. Due to their blocking nature, the Keylime registrar is subject to a remote denial of service against its SSL connections. This flaw allows an attacker to exhaust all available connections.
7.5 (High)
Affected products
Fixed
26 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: AppStream-9.2.0.Z.MAIN.EUS:keylime-0:6.5.2-6.el9_2.aarch64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-9.2.0.Z.MAIN.EUS:keylime-0:6.5.2-6.el9_2.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-9.2.0.Z.MAIN.EUS:keylime-0:6.5.2-6.el9_2.s390x | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-9.2.0.Z.MAIN.EUS:keylime-0:6.5.2-6.el9_2.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-9.2.0.Z.MAIN.EUS:keylime-0:6.5.2-6.el9_2.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-9.2.0.Z.MAIN.EUS:keylime-base-0:6.5.2-6.el9_2.aarch64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-9.2.0.Z.MAIN.EUS:keylime-base-0:6.5.2-6.el9_2.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-9.2.0.Z.MAIN.EUS:keylime-base-0:6.5.2-6.el9_2.s390x | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-9.2.0.Z.MAIN.EUS:keylime-base-0:6.5.2-6.el9_2.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-9.2.0.Z.MAIN.EUS:keylime-registrar-0:6.5.2-6.el9_2.aarch64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-9.2.0.Z.MAIN.EUS:keylime-registrar-0:6.5.2-6.el9_2.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-9.2.0.Z.MAIN.EUS:keylime-registrar-0:6.5.2-6.el9_2.s390x | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-9.2.0.Z.MAIN.EUS:keylime-registrar-0:6.5.2-6.el9_2.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-9.2.0.Z.MAIN.EUS:keylime-selinux-0:6.5.2-6.el9_2.noarch | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-9.2.0.Z.MAIN.EUS:keylime-tenant-0:6.5.2-6.el9_2.aarch64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-9.2.0.Z.MAIN.EUS:keylime-tenant-0:6.5.2-6.el9_2.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-9.2.0.Z.MAIN.EUS:keylime-tenant-0:6.5.2-6.el9_2.s390x | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-9.2.0.Z.MAIN.EUS:keylime-tenant-0:6.5.2-6.el9_2.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-9.2.0.Z.MAIN.EUS:keylime-verifier-0:6.5.2-6.el9_2.aarch64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-9.2.0.Z.MAIN.EUS:keylime-verifier-0:6.5.2-6.el9_2.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-9.2.0.Z.MAIN.EUS:keylime-verifier-0:6.5.2-6.el9_2.s390x | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-9.2.0.Z.MAIN.EUS:keylime-verifier-0:6.5.2-6.el9_2.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-9.2.0.Z.MAIN.EUS:python3-keylime-0:6.5.2-6.el9_2.aarch64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-9.2.0.Z.MAIN.EUS:python3-keylime-0:6.5.2-6.el9_2.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-9.2.0.Z.MAIN.EUS:python3-keylime-0:6.5.2-6.el9_2.s390x | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-9.2.0.Z.MAIN.EUS:python3-keylime-0:6.5.2-6.el9_2.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Moderate
A flaw was found in the Keylime registrar that could allow a bypass of the challenge-response protocol during agent registration. This issue may allow an attacker to impersonate an agent and hide the true status of a monitored machine if the fake agent is added to the verifier list by a legitimate user, resulting in a breach of the integrity of the registrar database.
6.5 (Medium)
Affected products
Fixed
26 products, the same list as for
CVE-2023-38200
Threats
Impact
Moderate
References
16 references
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"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "keylime: registrar is subject to a DoS against SSL connections"
},
{
"cve": "CVE-2023-38201",
"cwe": {
"id": "CWE-639",
"name": "Authorization Bypass Through User-Controlled Key"
},
"discovery_date": "2023-07-13T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2222693"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in the Keylime registrar that could allow a bypass of the challenge-response protocol during agent registration. This issue may allow an attacker to impersonate an agent and hide the true status of a monitored machine if the fake agent is added to the verifier list by a legitimate user, resulting in a breach of the integrity of the registrar database.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "Keylime: challenge-response protocol bypass during agent registration",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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},
{
"category": "external",
"summary": "RHBZ#2222693",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2222693"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2023-38201",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-38201"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-38201",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-38201"
},
{
"category": "external",
"summary": "https://github.com/keylime/keylime/commit/9e5ac9f25cd400b16d5969f531cee28290543f2a",
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},
{
"category": "external",
"summary": "https://github.com/keylime/keylime/security/advisories/GHSA-f4r5-q63f-gcww",
"url": "https://github.com/keylime/keylime/security/advisories/GHSA-f4r5-q63f-gcww"
}
],
"release_date": "2023-08-23T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2023-09-12T10:14:19+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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"title": "Keylime: challenge-response protocol bypass during agent registration"
}
]
}
Loading…
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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