FKIE_CVE-2023-3347
Vulnerability from fkie_nvd - Published: 2023-07-20 15:15 - Updated: 2026-06-17 06:13
Severity
5.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
5.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
5.9 (Medium) - CVSS:3.1/
Summary
A vulnerability was found in Samba's SMB2 packet signing mechanism. The SMB2 packet signing is not enforced if an admin configured "server signing = required" or for SMB2 connections to Domain Controllers where SMB2 packet signing is mandatory. This flaw allows an attacker to perform attacks, such as a man-in-the-middle attack, by intercepting the network traffic and modifying the SMB2 messages between client and server, affecting the integrity of the data.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| samba | samba | * | |
| samba | samba | * | |
| redhat | storage | 3.0 | |
| redhat | enterprise_linux | 8.0 | |
| redhat | enterprise_linux | 9.0 | |
| fedoraproject | fedora | 38 |
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"cpe:/o:redhat:enterprise_linux:8::baseos",
"cpe:/a:redhat:enterprise_linux:8::appstream",
"cpe:/a:redhat:enterprise_linux:8::crb"
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"product": "Red Hat Enterprise Linux 8",
"vendor": "Red Hat",
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"product": "Red Hat Enterprise Linux 6",
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"cpes": [
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],
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"packageName": "samba4",
"product": "Red Hat Enterprise Linux 6",
"vendor": "Red Hat"
},
{
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"cpes": [
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],
"defaultStatus": "unaffected",
"packageName": "samba",
"product": "Red Hat Enterprise Linux 7",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:storage:3"
],
"defaultStatus": "unknown",
"packageName": "samba",
"product": "Red Hat Storage 3",
"vendor": "Red Hat"
}
],
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}
],
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"cveTags": [],
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}
],
"id": "CVE-2023-3347",
"lastModified": "2026-06-17T06:13:52.080",
"metrics": {
"cvssMetricV31": [
{
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"baseScore": 5.9,
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"confidentialityImpact": "NONE",
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],
"role": "CISA Coordinator",
"timestamp": "2024-04-25T13:37:21.160351Z",
"version": "2.0.3"
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},
"published": "2023-07-20T15:15:11.940",
"references": [
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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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