CVE-2021-41239
CVSS V2 Medium 5
CVSS V3 Medium 5.3
Description
Nextcloud server is a self hosted system designed to provide cloud style services. In affected versions the User Status API did not consider the user enumeration settings by the administrator. This allowed a user to enumerate other users on the instance, even when user listings where disabled. It is recommended that the Nextcloud Server is upgraded to 20.0.14, 21.0.6 or 22.2.1. There are no known workarounds.
Overview
- CVE ID
- CVE-2021-41239
- Assigner
- security-advisories@github.com
- Vulnerability Status
- Analyzed
- Published Version
- 2022-03-08T18:15:07
- Last Modified Date
- 2022-10-24T16:42:27
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:* | 1 | OR | 20.0.14 | |
| cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:* | 1 | OR | 21.0.0 | 21.0.6 |
| cpe:2.3:a:nextcloud:nextcloud_server:22.2.0:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:P/I:N/A:N
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- NONE
- Availability Impact
- NONE
- Base Score
- 5
- Severity
- MEDIUM
- Exploitability Score
- 10
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- LOW
- Availability Impact
- NONE
- Base Score
- 5.3
- Base Severity
- MEDIUM
- Exploitability Score
- 3.9
- Impact Score
- 1.4
References
| Reference URL | Reference Tags |
|---|---|
| https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g722-cm3h-8wrx | Issue Tracking Third Party Advisory |
| https://github.com/nextcloud/server/issues/27122 | Issue Tracking Patch Third Party Advisory |
| https://github.com/nextcloud/server/pull/29260 | Patch Third Party Advisory |
| https://security.gentoo.org/glsa/202208-17 | Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-41239 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41239 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 15:46:05 | Added to TrackCVE | |||
| 2022-12-06 11:30:56 | 2022-03-08T18:15Z | 2022-03-08T18:15:07 | CVE Published Date | updated |
| 2022-12-06 11:30:56 | 2022-10-24T16:42:27 | CVE Modified Date | updated | |
| 2022-12-06 11:30:56 | Analyzed | Vulnerability Status | updated | |
| 2022-12-06 11:31:01 | References | updated |