fkie_cve-2023-32251
Vulnerability from fkie_nvd
Published
2025-07-31 21:15
Modified
2025-08-04 15:06
Severity ?
Summary
A vulnerability has been identified in the Linux kernel's ksmbd component (kernel SMB/CIFS server). A security control designed to prevent dictionary attacks, which introduces a 5-second delay during session setup, can be bypassed through the use of asynchronous requests. This bypass negates the intended anti-brute-force protection, potentially allowing attackers to conduct dictionary attacks more efficiently against user credentials or other authentication mechanisms.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability has been identified in the Linux kernel\u0027s ksmbd component (kernel SMB/CIFS server). A security control designed to prevent dictionary attacks, which introduces a 5-second delay during session setup, can be bypassed through the use of asynchronous requests. This bypass negates the intended anti-brute-force protection, potentially allowing attackers to conduct dictionary attacks more efficiently against user credentials or other authentication mechanisms."
},
{
"lang": "es",
"value": "Se ha identificado una vulnerabilidad en el componente ksmbd del kernel de Linux (servidor SMB/CIFS del kernel). Un control de seguridad dise\u00f1ado para prevenir ataques de diccionario, que introduce un retraso de 5 segundos durante la configuraci\u00f3n de la sesi\u00f3n, puede eludirse mediante solicitudes as\u00edncronas. Esta elusi\u00f3n invalida la protecci\u00f3n anti-fuerza bruta prevista, lo que podr\u00eda permitir a los atacantes realizar ataques de diccionario de forma m\u00e1s eficiente contra las credenciales de usuario u otros mecanismos de autenticaci\u00f3n."
}
],
"id": "CVE-2023-32251",
"lastModified": "2025-08-04T15:06:36.623",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 3.7,
"baseSeverity": "LOW",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.2,
"impactScore": 1.4,
"source": "secalert@redhat.com",
"type": "Secondary"
}
]
},
"published": "2025-07-31T21:15:26.810",
"references": [
{
"source": "secalert@redhat.com",
"url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b096d97f47326b1e2dbdef1c91fab69ffda54d17"
},
{
"source": "secalert@redhat.com",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-23-699/"
}
],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Awaiting Analysis",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-307"
}
],
"source": "secalert@redhat.com",
"type": "Secondary"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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