Vulnerability Name: | CVE-2016-9463 (CCN-123841) | ||||||||||||
Assigned: | 2016-10-10 | ||||||||||||
Published: | 2016-10-10 | ||||||||||||
Updated: | 2019-10-09 | ||||||||||||
Summary: | 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. | ||||||||||||
CVSS v3 Severity: | 8.1 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H) 7.1 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
6.4 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C)
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CVSS v2 Severity: | 6.8 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P)
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Vulnerability Type: | CWE-287 | ||||||||||||
Vulnerability Consequences: | Bypass Security | ||||||||||||
References: | Source: MITRE Type: CNA CVE-2016-9463 Source: XF Type: UNKNOWN nextcloud-owncloud-cve20169463-sec-bypass(123841) Source: MISC Type: Issue Tracking, Patch, Third Party Advisory https://github.com/nextcloud/apps/commit/b85ace6840b8a6704641086bc3b8eb8e81cb2274 Source: MISC Type: Issue Tracking, Patch, Third Party Advisory https://github.com/nextcloud/apps/commit/decb91fd31f4ffab191cbf09ce4e5c55c67a4087 Source: MISC Type: Issue Tracking, Patch, Third Party Advisory https://github.com/owncloud/apps/commit/16cbccfc946c8711721fa684d78135ca1fb64791 Source: MISC Type: Issue Tracking, Patch, Third Party Advisory https://github.com/owncloud/apps/commit/5d47e7b52646cf79edadd78ce10c754290cbb732 Source: MISC Type: Issue Tracking, Patch, Third Party Advisory https://github.com/owncloud/apps/commit/a0e07b7ddd5a5fd850a6e07f8457d05b76a300b3 Source: MISC Type: Exploit, Third Party Advisory https://hackerone.com/reports/148151 Source: CCN Type: nextCloud Security Advisory NC-SA-2016-006 SMB User Authentication Bypass Source: MISC Type: Patch, Vendor Advisory https://nextcloud.com/security/advisory/?id=nc-sa-2016-006 Source: CCN Type: ownCloud Security Advisory oC-SA-2016-017 SMB User Authentication Bypass Source: MISC Type: Patch, Vendor Advisory https://owncloud.org/security/advisory/?id=oc-sa-2016-017 Source: MISC Type: Exploit, Technical Description, Third Party Advisory https://rhinosecuritylabs.com/2016/10/operation-ownedcloud-exploitation-post-exploitation-persistence/ Source: CCN Type: WhiteSource Vulnerability Database CVE-2016-9463 | ||||||||||||
Vulnerable Configuration: | Configuration 1: Configuration CCN 1: Denotes that component is vulnerable | ||||||||||||
Oval Definitions | |||||||||||||
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