ghsa-4r4x-7f2r-2f4c
Vulnerability from github
Nextcloud Server before 9.0.54 and 10.0.1 & ownCloud Server before 9.1.2, 9.0.6, and 8.2.9 suffer from SMB User Authentication Bypass. Nextcloud/ownCloud include an optional and not by default enabled SMB authentication component that allows authenticating users against an SMB server. This backend is implemented in a way that tries to connect to a SMB server and if that succeeded consider the user logged-in. The backend did not properly take into account SMB servers that have any kind of anonymous auth configured. This is the default on SMB servers nowadays and allows an unauthenticated attacker to gain access to an account without valid credentials. Note: The SMB backend is disabled by default and requires manual configuration in the Nextcloud/ownCloud config file. If you have not configured the SMB backend then you're not affected by this vulnerability.
{
"affected": [],
"aliases": [
"CVE-2016-9463"
],
"database_specific": {
"cwe_ids": [
"CWE-287",
"CWE-303"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-03-28T02:59:00Z",
"severity": "HIGH"
},
"details": "Nextcloud Server before 9.0.54 and 10.0.1 \u0026 ownCloud Server before 9.1.2, 9.0.6, and 8.2.9 suffer from SMB User Authentication Bypass. Nextcloud/ownCloud include an optional and not by default enabled SMB authentication component that allows authenticating users against an SMB server. This backend is implemented in a way that tries to connect to a SMB server and if that succeeded consider the user logged-in. The backend did not properly take into account SMB servers that have any kind of anonymous auth configured. This is the default on SMB servers nowadays and allows an unauthenticated attacker to gain access to an account without valid credentials. Note: The SMB backend is disabled by default and requires manual configuration in the Nextcloud/ownCloud config file. If you have not configured the SMB backend then you\u0027re not affected by this vulnerability.",
"id": "GHSA-4r4x-7f2r-2f4c",
"modified": "2025-04-20T03:34:57Z",
"published": "2022-05-13T01:38:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2016-9463"
},
{
"type": "WEB",
"url": "https://github.com/nextcloud/apps/commit/b85ace6840b8a6704641086bc3b8eb8e81cb2274"
},
{
"type": "WEB",
"url": "https://github.com/nextcloud/apps/commit/decb91fd31f4ffab191cbf09ce4e5c55c67a4087"
},
{
"type": "WEB",
"url": "https://github.com/owncloud/apps/commit/16cbccfc946c8711721fa684d78135ca1fb64791"
},
{
"type": "WEB",
"url": "https://github.com/owncloud/apps/commit/5d47e7b52646cf79edadd78ce10c754290cbb732"
},
{
"type": "WEB",
"url": "https://github.com/owncloud/apps/commit/a0e07b7ddd5a5fd850a6e07f8457d05b76a300b3"
},
{
"type": "WEB",
"url": "https://hackerone.com/reports/148151"
},
{
"type": "WEB",
"url": "https://nextcloud.com/security/advisory/?id=nc-sa-2016-006"
},
{
"type": "WEB",
"url": "https://owncloud.org/security/advisory/?id=oc-sa-2016-017"
},
{
"type": "WEB",
"url": "https://rhinosecuritylabs.com/2016/10/operation-ownedcloud-exploitation-post-exploitation-persistence"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
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.