FKIE_CVE-2018-13405
Vulnerability from fkie_nvd - Published: 2018-07-06 14:29 - Updated: 2024-11-21 03:47
Severity ?
Summary
The inode_init_owner function in fs/inode.c in the Linux kernel through 3.16 allows local users to create files with an unintended group ownership, in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of that group. Here, the non-member can trigger creation of a plain file whose group ownership is that group. The intended behavior was that the non-member can trigger creation of a directory (but not a plain file) whose group ownership is that group. The non-member can escalate privileges by making the plain file executable and SGID.
References
Impacted products
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],
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"descriptions": [
{
"lang": "en",
"value": "The inode_init_owner function in fs/inode.c in the Linux kernel through 3.16 allows local users to create files with an unintended group ownership, in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of that group. Here, the non-member can trigger creation of a plain file whose group ownership is that group. The intended behavior was that the non-member can trigger creation of a directory (but not a plain file) whose group ownership is that group. The non-member can escalate privileges by making the plain file executable and SGID."
},
{
"lang": "es",
"value": "La funci\u00f3n inode_init_owner en fs/inode.c en el kernel de Linux hasta la versi\u00f3n 3.16 permite a los usuarios locales crear archivos con una propiedad de grupo no deseada, en un escenario donde un directorio es SGID a un cierto grupo y es escribible por un usuario que no es miembro de ese grupo. En este caso, el no miembro puede desencadenar la creaci\u00f3n de un archivo simple cuya propiedad de grupo sea ese grupo. El comportamiento previsto era que el no miembro puede activar la creaci\u00f3n de un directorio (pero no un archivo plano) cuya propiedad de grupo sea ese grupo. El no miembro puede aumentar sus privilegios haciendo el archivo plano ejecutable y el SGID"
}
],
"id": "CVE-2018-13405",
"lastModified": "2024-11-21T03:47:02.490",
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"version": "2.0"
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"integrityImpact": "HIGH",
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"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
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}
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Sightings
| Author | Source | Type | Date |
|---|
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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