CVE-2018-5407 (GCVE-0-2018-5407)
Vulnerability from cvelistv5 – Published: 2018-11-15 21:00 – Updated: 2024-08-05 05:33
VLAI
EPSS
VEX
Summary
Simultaneous Multi-threading (SMT) in processors can enable local users to exploit software vulnerable to timing attacks via a side-channel timing attack on 'port contention'.
Severity
4.7 (Medium)
CWE
Assigner
References
28 references
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| N/A | Processors supporting Simultaneous Multi-Threading |
Affected:
N/A
|
Date Public
2018-11-15 00:00
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"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Exploit",
"Third Party Advisory",
"VDB Entry"
],
"url": "https://www.exploit-db.com/exploits/45785/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Third Party Advisory"
],
"url": "https://www.oracle.com/security-alerts/cpuapr2020.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Third Party Advisory"
],
"url": "https://www.oracle.com/security-alerts/cpujan2020.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Third Party Advisory"
],
"url": "https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Third Party Advisory"
],
"url": "https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://www.tenable.com/security/tns-2018-16"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://www.tenable.com/security/tns-2018-17"
}
],
"sourceIdentifier": "cret@cert.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-200"
}
],
"source": "cret@cert.org",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-203"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-06-28T11:35:17+00:00",
"cve": "CVE-2018-5407",
"id": "CVE-2018-5407",
"initial_release_date": "2018-10-30T00:00:00+00:00",
"product_status:fixed": "383",
"product_status:known_affected": "17",
"product_status:known_not_affected": "6",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "openssl: Side-channel vulnerability on SMT/Hyper-Threading architectures (PortSmash)",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2018/cve-2018-5407.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-09-15T02:37:52Z",
"cve": "CVE-2018-5407",
"id": "CVE-2018-5407",
"initial_release_date": "2023-02-15T04:31:37Z",
"product_status:known_affected": "430",
"product_status:known_not_affected": "322",
"product_status:recommended": "608",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2018-5407",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2018-5407.json",
"version": "49"
}
}
}
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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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