FKIE_CVE-2017-17807
Vulnerability from fkie_nvd - Published: 2017-12-20 23:29 - Updated: 2026-06-17 01:11
Severity
Summary
The KEYS subsystem in the Linux kernel before 4.14.6 omitted an access-control check when adding a key to the current task's "default request-key keyring" via the request_key() system call, allowing a local user to use a sequence of crafted system calls to add keys to a keyring with only Search permission (not Write permission) to that keyring, related to construct_get_dest_keyring() in security/keys/request_key.c.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * |
{
"affected": [
{
"affectedData": [
{
"product": "n/a",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
],
"source": "cve@mitre.org"
}
],
"configurations": [
{
"nodes": [
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"cpeMatch": [
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "4A92C99D-2B24-49B6-AFB9-2C47AFC49D0F",
"versionEndExcluding": "4.14.6",
"vulnerable": true
}
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"negate": false,
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],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The KEYS subsystem in the Linux kernel before 4.14.6 omitted an access-control check when adding a key to the current task\u0027s \"default request-key keyring\" via the request_key() system call, allowing a local user to use a sequence of crafted system calls to add keys to a keyring with only Search permission (not Write permission) to that keyring, related to construct_get_dest_keyring() in security/keys/request_key.c."
},
{
"lang": "es",
"value": "El subsistema KEYS en el kernel de Linux en versiones anteriores a la 4.14.6 omit\u00eda una comprobaci\u00f3n de control de acceso cuando se agregaba una clave al \"llavero de acceso por defecto\" de la tarea actual mediante la llamada al sistema request_key(), permitiendo a un usuario local utilizar una secuencia de llamadas de sistema manipuladas para a\u00f1adir claves a un llavero solo con permiso de b\u00fasqueda (no de escritura) a ese llavero. Esto est\u00e1 relacionado con construct_get_dest_keyring() en security/keys/request_key.c."
}
],
"id": "CVE-2017-17807",
"lastModified": "2026-06-17T01:11:41.227",
"metrics": {
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{
"acInsufInfo": false,
"baseSeverity": "LOW",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 2.1,
"confidentialityImpact": "NONE",
"integrityImpact": "PARTIAL",
"vectorString": "AV:L/AC:L/Au:N/C:N/I:P/A:N",
"version": "2.0"
},
"exploitabilityScore": 3.9,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
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"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 3.3,
"baseSeverity": "LOW",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
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"source": "nvd@nist.gov",
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},
"published": "2017-12-20T23:29:00.423",
"references": [
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"tags": [
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"url": "https://lists.debian.org/debian-lts-announce/2018/01/msg00004.html"
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"url": "https://usn.ubuntu.com/3617-1/"
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"url": "https://usn.ubuntu.com/3632-1/"
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{
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"tags": [
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],
"url": "https://www.debian.org/security/2017/dsa-4073"
},
{
"source": "cve@mitre.org",
"url": "https://www.debian.org/security/2018/dsa-4082"
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{
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"tags": [
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"url": "https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.6"
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{
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},
{
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"url": "https://lists.debian.org/debian-lts-announce/2018/01/msg00004.html"
},
{
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"url": "https://usn.ubuntu.com/3617-1/"
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"url": "https://usn.ubuntu.com/3617-2/"
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"url": "https://usn.ubuntu.com/3617-3/"
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"url": "https://usn.ubuntu.com/3632-1/"
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"tags": [
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"Release Notes"
],
"url": "https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.6"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
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"description": [
{
"lang": "en",
"value": "CWE-862"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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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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