CVE-2021-41179
CVSS V2 Medium 4
CVSS V3 Medium 6.5
Description
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.
Overview
- CVE ID
- CVE-2021-41179
- Assigner
- security-advisories@github.com
- Vulnerability Status
- Analyzed
- Published Version
- 2021-10-25T22:15:07
- Last Modified Date
- 2021-10-29T15:06:22
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:nextcloud:server:*:*:*:*:*:*:*:* | 1 | OR | 20.0.3 | 20.0.13 |
| cpe:2.3:a:nextcloud:server:*:*:*:*:*:*:*:* | 1 | OR | 21.0.1 | 21.0.5 |
| cpe:2.3:a:nextcloud:server:*:*:*:*:*:*:*:* | 1 | OR | 22.1.1 | 22.2.0 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:S/C:P/I:N/A:N
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- SINGLE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- NONE
- Availability Impact
- NONE
- Base Score
- 4
- Severity
- MEDIUM
- Exploitability Score
- 8
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- NONE
- Base Score
- 6.5
- Base Severity
- MEDIUM
- Exploitability Score
- 2.8
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| https://github.com/nextcloud/server/pull/28725 | Patch Third Party Advisory |
| https://hackerone.com/reports/1322865 | Permissions Required |
| https://github.com/nextcloud/security-advisories/security/advisories/GHSA-7hvh-rc6f-px23 | Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-41179 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41179 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 06:49:08 | Added to TrackCVE | |||
| 2022-12-05 13:15:22 | 2021-10-25T22:15Z | 2021-10-25T22:15:07 | CVE Published Date | updated |
| 2022-12-05 13:15:22 | 2021-10-29T15:06:22 | CVE Modified Date | updated | |
| 2022-12-05 13:15:22 | Analyzed | Vulnerability Status | updated |