| Vulnerability Name: | CVE-2021-41179 (CCN-211972) | ||||||||||||||||||||||||||||||||||||||||||||
| Assigned: | 2021-10-25 | ||||||||||||||||||||||||||||||||||||||||||||
| Published: | 2021-10-25 | ||||||||||||||||||||||||||||||||||||||||||||
| Updated: | 2021-10-29 | ||||||||||||||||||||||||||||||||||||||||||||
| Summary: | Nextcloud is an open-source, self-hosted productivity platform. Prior to Nextcloud Server versions 20.0.13, 21.0.5, and 22.2.0, the Two-Factor Authentication wasn't enforced for pages marked as public. Any page marked as `@PublicPage` could thus be accessed with a valid user session that isn't authenticated. This particularly affects the Nextcloud Talk application, as this could be leveraged to gain access to any private chat channel without going through the Two-Factor flow. It is recommended that the Nextcloud Server be upgraded to 20.0.13, 21.0.5 or 22.2.0. There are no known workarounds aside from upgrading. | ||||||||||||||||||||||||||||||||||||||||||||
| CVSS v3 Severity: | 6.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N) 5.7 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C)
7.1 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C)
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| CVSS v2 Severity: | 4.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:S/C:P/I:N/A:N)
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| Vulnerability Type: | CWE-304 | ||||||||||||||||||||||||||||||||||||||||||||
| Vulnerability Consequences: | Bypass Security | ||||||||||||||||||||||||||||||||||||||||||||
| References: | Source: MITRE Type: CNA CVE-2021-41179 Source: XF Type: UNKNOWN nextcloud-cve202141179-sec-bypass(211972) Source: CCN Type: Nextcloud GIT Repository Two-Factor Authentication not enforced for pages marked as public Source: CONFIRM Type: Third Party Advisory https://github.com/nextcloud/security-advisories/security/advisories/GHSA-7hvh-rc6f-px23 Source: MISC Type: Patch, Third Party Advisory https://github.com/nextcloud/server/pull/28725 Source: MISC Type: Permissions Required https://hackerone.com/reports/1322865 Source: CCN Type: WhiteSource Vulnerability Database CVE-2021-41179 | ||||||||||||||||||||||||||||||||||||||||||||
| Vulnerable Configuration: | Configuration 1: Configuration CCN 1:  Denotes that component is vulnerable | ||||||||||||||||||||||||||||||||||||||||||||
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