Upstream information

CVE-2021-32679 at MITRE

Description

Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20.0.11, and 21.0.3, filenames where not escaped by default in controllers using `DownloadResponse`. When a user-supplied filename was passed unsanitized into a `DownloadResponse`, this could be used to trick users into downloading malicious files with a benign file extension. This would show in UI behaviours where Nextcloud applications would display a benign file extension (e.g. JPEG), but the file will actually be downloaded with an executable file extension. The vulnerability is patched in versions 19.0.13, 20.0.11, and 21.0.3. Administrators of Nextcloud instances do not have a workaround available, but developers of Nextcloud apps may manually escape the file name before passing it into `DownloadResponse`.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having important severity.

CVSS v2 Scores
CVSS detail National Vulnerability Database
Base Score 6.8
Vector AV:N/AC:M/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
CVSS v3 Scores
CVSS detail National Vulnerability Database
Base Score 8.8
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
CVSSv3 Version 3.1
SUSE Bugzilla entry: 1188248 [RESOLVED / FIXED]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
SUSE Package Hub 12
  • nextcloud >= 20.0.11-28.1
  • nextcloud-apache >= 20.0.11-28.1
 Patchnames:
openSUSE-2021-1068
SUSE Package Hub 15 SP1
  • nextcloud >= 20.0.11-bp151.3.15.1
  • nextcloud-apache >= 20.0.11-bp151.3.15.1
 Patchnames:
openSUSE-2021-1068
SUSE Package Hub 15 SP2
  • nextcloud >= 20.0.11-bp152.2.9.1
  • nextcloud-apache >= 20.0.11-bp152.2.9.1
 Patchnames:
openSUSE-2021-1068
SUSE Package Hub 15 SP3
  • nextcloud >= 20.0.11-bp153.2.3.1
  • nextcloud-apache >= 20.0.11-bp153.2.3.1
 Patchnames:
openSUSE-2021-1068
openSUSE Leap 15.2
  • nextcloud >= 20.0.11-lp152.3.9.1
  • nextcloud-apache >= 20.0.11-lp152.3.9.1
 Patchnames:
openSUSE-2021-1068
openSUSE Leap 15.3
  • nextcloud >= 20.0.11-bp153.2.3.1
  • nextcloud-apache >= 20.0.11-bp153.2.3.1
 Patchnames:
openSUSE-2021-1068

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

SUSE Timeline for this CVE

CVE page created: Sun Nov 7 13:15:12 2021
CVE page last modified: Thu Dec 11 16:56:37 2025