Nextcloud: Content spoofing on https://surveyserver.nextcloud.com

Hi NextCloud team, the https://surveyserver.nextcloud.com domain is vulnerable against content spoofing in the forbidden page due to the fact that the request URI is reflected without validation inside the aforementioned page. 1. Go on...

Nextcloud: Passwords being stored as plain text in logging

When an exception occurs, any password sent to or being processed by the server may be stored as plain text in the log. I noticed that some methods are already being filtered in ExceptionSerializer.php, but many methods are missing from this list. Suggestion: instead of relying on a list of...

Nextcloud: Retrieval and alteration of exposed media on Android Oreo

Good afternoon. Any media downloaded from the cloud server within the Android app is subject to third party modification and server re-upload without explicit user consent. This happens at least on Android Oreo, as data is automatically stored on shared folder...

Nextcloud: Remote attacker can impersonate Social users via ActivityPub API

Hi there! First up I want to acknowledge that Social may not be in scope. I emailed [email protected], which pointed me here, and I wasn't sure whether to just put it in a GitHub issue. In any case I hope I'm not wasting your time. When an HTTP request arrives at the shared inbox endpoint...

openSUSE: Security Advisory for nextcloud (openSUSE-SU-2018:4002-1)

The remote host is missing an update for the Copyright C 2018 Greenbone Networks GmbH Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-or-later This program is free software; you can...

Nextcloud: xmlrpc.php is enabled - Nextcloud

Hi Nextcloud Team, Summary: An attacker can devise a XML request to list all the methods that are enabled on the server. Replace Get with POST request and add method call in the request. To reproduce the vulnerability you need to use Firefox browser and Burpsuite Open:...

Security update for nextcloud (moderate)

This update for nextcloud fixes security issues and bugs. Security issues fixed: - CVE-2018-3780: Stored XSS in autocomplete suggestions for file comments boo1114817 This update also contains all bug fixes and improvements in the 13.0.8 version, including: - Password expiration time changed from...

Security update for nextcloud (moderate)

This update for nextcloud fixes security issues and bugs. Security issues fixed: - CVE-2018-3780: Stored XSS in autocomplete suggestions for file comments boo1114817 This update also contains all bug fixes and improvements in the 13.0.8 version, including: - Password expiration time changed from...

openSUSE Security Update : nextcloud (openSUSE-2018-1487)

This update for nextcloud fixes security issues and bugs. Security issues fixed : - CVE-2018-3780: Stored XSS in autocomplete suggestions for file comments boo1114817 This update also contains all bug fixes and improvements in the 13.0.8 version, including : - Password expiration time changed fro...

Nextcloud: Github wikis are editable by anyone

Github wikis on the following projects https://github.com/nextcloud/fulltextsearch https://github.com/nextcloud/nextcloudpi https://github.com/nextcloud/spreed https://github.com/nextcloud/ocsms https://github.com/nextcloud/nextcloud-snap https://github.com/nextcloud/passman can be edited by any...

Nextcloud: Expired reshare links allow access to all files in share

After a reshared subfolder link has expired, the link allows access to the full folder. I found the Problem in Nextcloud 14.0.3, but it still persists in 14.0.4 Steps: 1. share folder "A" with an nextcloud group 2. reshare a subfolder "B" of this folder with another user on this group in this cas...

Nextcloud: Share recipient can modify a share's expiration date

Vulnerable URL http://server/nextcloud/ocs/v2.php/apps/filessharing/api/v1/shares/share ID number Summary Nextcloud users can set expiration dates on documents they share with others. However, the function to update a share does not appear to properly validate the requester is the owner when...

Event details leaked when sharing a non-public calendar event (NC-SA-2020-013)

Improper preservation of permissions in Nextcloud Server 14.0.3 causes the event details to be leaked when sharing a non-public event...

Nextcloud: Event privacy level does not work in Thunderbird

Events in shared calendar with changed privacy level to any other than public are shown in Thunderbird as public anyway with all details How to reproduce: 1 - create an event in user A's calendar shared to user B 2 - change privacy setting of this event to any other than public 3 - open Thunderbi...

Nextcloud Server Privilege Authentication Vulnerability

Nextcloud is a set of open source self-hosted file synchronization and sharing communication application platform.Nextcloud Server is one of the server version. A privilege authentication vulnerability exists in versions of Nextcloud Server prior to 14.0.0, which can be exploited by an attacker t...

Nextcloud Server Privilege Authentication Vulnerability (CNVD-2019-18774)

Nextcloud is a set of open source self-hosted file synchronization and sharing communication application platform.Nextcloud Server is one of the server version. A privilege validation vulnerability exists in versions of Nextcloud Server prior to 14.0.0 that can be exploited by an attacker to bypa...

Nextcloud Server Session Fixation Vulnerability

Nextcloud is an open source self-hosted file synchronization and sharing communication application platform from Nextcloud Germany.Nextcloud Server is one of the server version. A session fixation vulnerability exists in Nextcloud Server versions prior to 14.0.0, 13.0.3, and 12.0.8, which can be...

Nextcloud Server Improper Access Control Checking Vulnerability

Nextcloud is a set of client-server software for creating file hosting services and using them. An improper access control checking vulnerability exists in versions of Nextcloud Server prior to 14.0.0, which can be exploited by an unauthenticated, remote attacker via the publicpreview.php functio...

Nextcloud Server Access Control Error Vulnerability

Nextcloud is an open source self-hosted file synchronization and sharing communication application platform from Nextcloud Germany.Nextcloud Server is one of the server version. An Access Control Error vulnerability exists in Nextcloud Server versions prior to 14.0.0, 13.0.6, and 12.0.11, which c...

Nextcloud Server < 14.0.0, < 13.0.3, < 12.0.8 Session fixation on public share page (NC-SA-2018-013) - Windows

Nextcloud Server is prone to a session fixation vulnerability. SPDX-FileCopyrightText: 2018 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only if description...