CVE-2018-3775

Improper Authentication in Nextcloud Server prior to version 12.0.3 would allow an attacker that obtained user credentials to bypass the 2 Factor Authentication...

CVE-2018-3775

CVE-2018-3775 concerns Nextcloud Server prior to version 12.0.3, where an attacker with valid user credentials could bypass two‑factor authentication due to improper authentication. The NVD entry lists CVSSv3.1 impact as high (C/H/I/H/A/H) and CVSSv2 as medium (I/P, no confidentiality/availabilit...

CVE-2018-3776

CVE-2018-3776 affects Nextcloud Server; an improper input validator in affected versions prior to 12.0.3 and 11.0.5 could allow an attacker’s actions to bypass audit-logging. The vulnerability is documented across multiple sources (including Red Hat and OpenVAS feeds) and is described as a loggin...

Nextcloud: Self xss

Hello, I found self xss your main domain. I m sending details and I attached poc video. Pls open https://nextcloud.com/about/ Use burp suite and active intercept. Refresh this url. And pls add this payload your url. "alert205'"nextcloud.com Pls click intercept off and page refreshing. Now you see...

Nextcloud: Access control issue -- [Allow file system access not validated when using session auth]

Obtain an App Token 2. Check that you can access the files with this token and save the cookies 3. Revoke filesystem access for this token 4. See that you can still access the files when using the cookies At step 4 there access to the files should also be forbidden...

Nextcloud: Missing SPF flags for customerupdates.nextcloud.com

Hey, I just checked for SPF records for the customerupdates.nextcloud.com domain, and there are none. The fake message reaches the inbox from this domain. Not spam. You can validate by testing yourself here: http://www.kitterman.com/spf/validate.html This subdomain too: update.nextcloud.com Impac...

Nextcloud: HTML injection with AutoComplete suggestions

As user1 set your displayname to Name 2. As user2 autocomplete the name in the comments input or Talk chat input 3. Click on the user name you just autocompleted User2 is redirected to https://nextcloud.com Only works with HTML, not with script Impact User1 can trick user2 to render any html...

openSUSE Security Update : nextcloud (openSUSE-2018-712)

This update for nextcloud fixes the following issues : Security issues fixed : - CVE-2018-3761: Fix improper authentication on the OAuth2 token endpoint bsc1100344. - CVE-2018-3762: Fix improper checks of dropped permissions for incoming shares allowing a user to still request previews for files ...

openSUSE: Security Advisory for nextcloud (openSUSE-SU-2018:1924-1)

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: Ubuntu 12.04 Privilege Escalation

Hello Security Team, Description According to its self-reported version number, the Unix operating system running on the remote host is no longer supported. Lack of support implies that no new security patches for the product will be released by the vendor. As a result, it is likely to contain...

Security update for nextcloud (moderate)

This update for nextcloud fixes the following issues: Security issues fixed: - CVE-2018-3761: Fix improper authentication on the OAuth2 token endpoint bsc1100344. - CVE-2018-3762: Fix improper checks of dropped permissions for incoming shares allowing a user to still request previews for files it...

Nextcloud Server Authorization Issues 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 authorization issue vulnerability exists in Nextcloud Server. An attacker could exploit the vulnerability to obtain ...

Nextcloud Contacts Cross-Site Scripting Vulnerability

Nextcloud is a suite of open source, self-hosted file synchronization and sharing communication applications from Nextcloud Germany.Nextcloud Contacts is one of the applications used to synchronize and manage contacts. A cross-site scripting vulnerability exists in versions prior to Nextcloud...

Nextcloud Calendar Cross-Site Scripting Vulnerability

Nextcloud is a suite of open source, self-hosted file synchronization and sharing communication application platform from Nextcloud Germany.Nextcloud Calendar is one of the calendar applications. A cross-site scripting vulnerability exists in Nextcloud Calendar versions prior to 1.5.8 and prior t...

Nextcloud Server Information Disclosure Vulnerability (CNVD-2018-12756)

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 security vulnerability exists in Nextcloud Server versions prior to 12.0.8 and 13.0.3, which stems from the program's...

Nextcloud Server Image Previews File Access Control Bypass Vulnerability - Linux

Nextcloud Server is prone to an information disclosure 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 CPE =...

Input validation

Nextcloud Server before 12.0.8 and 13.0.3 suffers from improper checks of dropped permissions for incoming shares allowing a user to still request previews for files it should not have access to...

Cross site scripting

In Nextcloud Calendar before 1.5.8 and 1.6.1, a missing sanitization of search results for an autocomplete field could lead to a stored XSS requiring user-interaction. The missing sanitization only affected group names, hence malicious search results could only be crafted by privileged users like...

Cross site scripting

In Nextcloud Contacts before 2.1.2, a missing sanitization of search results for an autocomplete field could lead to a stored XSS requiring user-interaction. The missing sanitization only affected group names, hence malicious search results could only be crafted by privileged users like admins or...

CVE-2018-3761

Nextcloud Server before 12.0.8 and 13.0.3 suffer from improper authentication on the OAuth2 token endpoint. Missing checks potentially allowed handing out new tokens in case the OAuth2 client was partly compromised...