CVE-2021-32766

Upstream information

CVE-2021-32766 at MITRE

Description

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.

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SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having critical severity.

CVSS v2 Scores

CVSS detail	National Vulnerability Database
Base Score	5
Vector	AV:N/AC:L/Au:N/C:P/I:N/A:N
Access Vector	Network
Access Complexity	Low
Authentication	None
Confidentiality Impact	Partial
Integrity Impact	None
Availability Impact	None

CVSS v3 Scores

CVSS detail	National Vulnerability Database
Base Score	5.3
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality Impact	Low
Integrity Impact	None
Availability Impact	None
CVSSv3 Version	3.1

SUSE Bugzilla entry: 1190291 [RESOLVED / FIXED]

SUSE Security Advisories:

• openSUSE-SU-2021:1250-1, published Mon Sep 13 21:40:07 2021
• openSUSE-SU-2021:1252-1, published Tue Sep 14 15:34:41 2021
• openSUSE-SU-2021:1253-1, published Tue Sep 14 15:34:41 2021
• openSUSE-SU-2021:1255-1, published Tue Sep 14 15:34:41 2021
• openSUSE-SU-2021:1275-1, published Thu Sep 16 15:41:22 2021

List of released packages

Product(s)	Fixed package version(s)	References
SUSE Package Hub 12	nextcloud >= 20.0.12-31.1 nextcloud-apache >= 20.0.12-31.1	Patchnames: openSUSE-2021-1252
SUSE Package Hub 15 SP1	nextcloud >= 20.0.12-bp151.3.18.1 nextcloud-apache >= 20.0.12-bp151.3.18.1	Patchnames: openSUSE-2021-1250
SUSE Package Hub 15 SP2	nextcloud >= 20.0.12-bp152.2.12.1 nextcloud-apache >= 20.0.12-bp152.2.12.1	Patchnames: openSUSE-2021-1275
SUSE Package Hub 15 SP3	nextcloud >= 20.0.12-bp153.2.6.1 nextcloud-apache >= 20.0.12-bp153.2.6.1	Patchnames: openSUSE-2021-1255
openSUSE Leap 15.2	nextcloud >= 20.0.12-lp152.3.12.1 nextcloud-apache >= 20.0.12-lp152.3.12.1	Patchnames: openSUSE-2021-1253
openSUSE Leap 15.3	nextcloud >= 20.0.12-bp153.2.6.1 nextcloud-apache >= 20.0.12-bp153.2.6.1	Patchnames: openSUSE-2021-1255

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Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s)	Source package	State
Products past their end of life and not receiving proactive updates anymore.
SUSE Package Hub 12	nextcloud	Released
SUSE Package Hub 15 SP1	nextcloud	Released
SUSE Package Hub 15 SP2	nextcloud	Released
SUSE Package Hub 15 SP3	nextcloud	Released

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SUSE Timeline for this CVE

CVE page created: Wed Sep 8 10:30:11 2021
CVE page last modified: Thu Dec 11 16:56:47 2025