| Vulnerability Name: | CVE-2021-32766 (CCN-208903) | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Assigned: | 2021-09-06 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Published: | 2021-09-06 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Updated: | 2022-09-27 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Summary: | Nextcloud Text is an open source plaintext editing application which ships with the nextcloud server. In affected versions the Nextcloud Text application returned different error messages depending on whether a folder existed in a public link share. This is problematic in case the public link share has been created with "Upload Only" privileges. (aka "File Drop"). A link share recipient is not expected to see which folders or files exist in a "File Drop" share. Using this vulnerability an attacker is able to enumerate folders in such a share. Exploitation requires that the attacker has access to a valid affected "File Drop" link share. It is recommended that the Nextcloud Server is upgraded to 20.0.12, 21.0.4 or 22.0.1. Users who are unable to upgrade are advised to disable the Nextcloud Text application in the app settings. | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| CVSS v3 Severity: | 5.3 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N) 4.6 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C)
4.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C)
| ||||||||||||||||||||||||||||||||||||||||||||||||||||
| CVSS v2 Severity: | 5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N)
| ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Vulnerability Type: | CWE-209 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Vulnerability Consequences: | Obtain Information | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| References: | Source: MITRE Type: CNA CVE-2021-32766 Source: XF Type: UNKNOWN nextcloud-cve202132766-info-disc(208903) Source: CCN Type: Nextcloud GIT Repository Nextcloud Text app can disclose existence of folders in "File Drop" link share Source: CONFIRM Type: Third Party Advisory https://github.com/nextcloud/security-advisories/security/advisories/GHSA-gcf3-3wmc-88jr Source: MISC Type: Patch, Third Party Advisory https://github.com/nextcloud/text/pull/1716 Source: MISC Type: Permissions Required, Third Party Advisory https://hackerone.com/reports/1253475 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Vulnerable Configuration: | Configuration 1: Configuration CCN 1:  Denotes that component is vulnerable | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Oval Definitions | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||||||||||||||||||||||
| BACK | |||||||||||||||||||||||||||||||||||||||||||||||||||||