fkie_cve-2017-0883
Vulnerability from fkie_nvd
Published
2017-04-05 20:59
Modified
2025-04-20 01:37
Severity ?
Summary
Nextcloud Server before 9.0.55 and 10.0.2 suffers from a permission increase on re-sharing via OCS API issue. A permission related issue within the OCS sharing API allowed an authenticated adversary to reshare shared files with an increasing permission set. This may allow an attacker to edit files in a share despite having only a 'read' permission set. Note that this only affects folders and files that the adversary has at least read-only permissions for.
References
| ▶ | URL | Tags | |
|---|---|---|---|
| support@hackerone.com | https://hackerone.com/reports/169680 | Third Party Advisory | |
| support@hackerone.com | https://nextcloud.com/security/advisory/?id=nc-sa-2017-001 | Patch, Vendor Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://hackerone.com/reports/169680 | Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://nextcloud.com/security/advisory/?id=nc-sa-2017-001 | Patch, Vendor Advisory |
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| nextcloud | nextcloud_server | * | |
| nextcloud | nextcloud_server | 10.0.2 |
{
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*",
"matchCriteriaId": "49A0184E-41CF-4966-9042-DD20F5F6492B",
"versionEndIncluding": "9.0.54",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:nextcloud:nextcloud_server:10.0.2:*:*:*:*:*:*:*",
"matchCriteriaId": "DB0199F0-45EC-4745-BF5A-001A54029781",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Nextcloud Server before 9.0.55 and 10.0.2 suffers from a permission increase on re-sharing via OCS API issue. A permission related issue within the OCS sharing API allowed an authenticated adversary to reshare shared files with an increasing permission set. This may allow an attacker to edit files in a share despite having only a \u0027read\u0027 permission set. Note that this only affects folders and files that the adversary has at least read-only permissions for."
},
{
"lang": "es",
"value": "Nextcloud Server en versiones anteriores a 9.0.55 y 10.0.2 sufre un aumento de permiso al volver a compartir a trav\u00e9s del problema de la API de OCS compartiendo API permiti\u00f3 a un adversario autenticado compartir archivos compartidos con un conjunto de permisos creciente. Esto puede permitir que un atacante edite archivos en un recurso compartido a pesar de tener s\u00f3lo un conjunto de permisos \u0027le\u00eddo\u0027. Tenga en cuenta que esto s\u00f3lo afecta a carpetas y archivos que el adversario tiene al menos permisos de s\u00f3lo lectura."
}
],
"id": "CVE-2017-0883",
"lastModified": "2025-04-20T01:37:25.860",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "SINGLE",
"availabilityImpact": "NONE",
"baseScore": 5.5,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:N",
"version": "2.0"
},
"exploitabilityScore": 8.0,
"impactScore": 4.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV30": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.4,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
"version": "3.0"
},
"exploitabilityScore": 3.1,
"impactScore": 2.7,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2017-04-05T20:59:00.197",
"references": [
{
"source": "support@hackerone.com",
"tags": [
"Third Party Advisory"
],
"url": "https://hackerone.com/reports/169680"
},
{
"source": "support@hackerone.com",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "https://nextcloud.com/security/advisory/?id=nc-sa-2017-001"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://hackerone.com/reports/169680"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "https://nextcloud.com/security/advisory/?id=nc-sa-2017-001"
}
],
"sourceIdentifier": "support@hackerone.com",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-275"
}
],
"source": "support@hackerone.com",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-732"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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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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