Shareinfo url doesn't verify file drop permissions - ownCloud

The permission check for a file drop upload only share could be circumvented by using the shareinfo API. This allowed to see from the files in the filedrop but didn’t allow downloads...

Server-Side Request Forgery in federated sharing API - ownCloud

Server-Side Request Forgery in federated sharing API may allow an unauthenticated attacker to identify internal servers. Furthermore, due to improper timeout handling, the server could be affected by a Denial of Service attack...

Full installation path disclosure through error message - ownCloud

ownCloud returns exception error messages to the user in two different places, allowing an authenticated adversary to gain information about the installation path of the ownCloud instance. There is no further information disclosure. Affected Software ownCloud Server 8.1.4 CVE-2016-1501...

Server: Multiple XSS

Due to not sanitising all user provided input the below mentioned ownCloud versions are vulnerable against several XSS attack vectors. ownCloud advises browsers to disable inline JavaScript execution due to the used Content-Security-Policy, this vulnerability is therefore likely not exploitable i...

Server: XSS in "Share Interface"

Multiple stored and reflected XSS have been adressed. For more information please consult the official advisory. This advisory is licensed CC BY-SA 4.0...

CSRF token leakage - ownCloud

The configuration loader in ownCloud 5.0.x before 5.0.6 includes private data such as CSRF tokens in a JavaScript file, which allows remote attackers to obtain sensitive information. Affected Software ownCloud Server 5.0.6 CVE-2013-2086 Action Taken It is recommended that all instances are upgrad...

Missing user validation leading to information disclosure

Deleting users with certain names caused system files to be deleted. Risk is higher for systems which allow users to register themselves and have the data directory in the web root...

Resource Exthaustion when sanitizing filenames - ownCloud

The sanitization component for filenames was vulnerable to DoS when parsing specially crafted file names passed via specific endpoints. Effectively this lead to a endless loop filling the log file until the system is not anymore responsive. Affected Software ownCloud Server 6.0.8 CVE-2015-4717...

Server: Mounted Dropbox storage allows "Dropbox.com" to access any file

A bug in the SDK used to connect ownCloud against the Dropbox server might allow the owner of "Dropbox.com" to gain access to any files on the ownCloud server if an external Dropbox storage was mounted. This was caused by a feature of PHP which has been turned off per default as of PHP 5.6.0 in t...

Enumeration of shared files in documents - ownCloud

Due to using the auto-incrementing fileid instead of the random generated token to access files in the documents app an authenticated users could enumerate shared files of other users. Affected Software ownCloud Server 6.0.3 CVE-2014-3837 Action Taken We replaced the usage of fileid with our rand...

WebDAV Api Authentication Bypass using Pre-Signed URLs - ownCloud

It is possible to access, modify or delete any file without authentication if the username of the victim is known and the victim has no signing-key configured which is the default...

SQLInjection in FileContentProvider.kt - ownCloud

Due to some insecure code in a exported content provider an attacker with local access could retrieve information from the ownCloud app database through SQL injection...

Bypassing File Firewall (oC-SA-2020-002)

Platform: ownCloud Server Versions: n/a Date: 8/3/2020 Risk: Low CVSS v3 Base Score: 1.6 CVSS v3 Vector: AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:N/A:N CWE ID: CWE-791 CWE Name: Incomplete Filtering of Special Elements...

Mounted Dropbox storage allows "Dropbox.com" to access any file - ownCloud

A bug in the SDK used to connect ownCloud against the Dropbox server might allow the owner of "Dropbox.com" to gain access to any files on the ownCloud server if an external Dropbox storage was mounted. This was caused by a feature of PHP which has been turned off per default as of PHP 5.6.0 in t...

Bypassing App Lock (Pattern/Passcode/Fingerprint lock | Android) (oC-SA-2020-003)

Given an attacker has physical access, creating a backup of the ownCloud Android app via adb provides access to the app preferences file. Contained in the file were settings related to the app lock feature such as the pincode/pattern and if the respective lock is active. An attacker could change...

Public-Link Password-Bypass via Image-Previews – ownCloud

------- It was possible to access the preview-image of a password-protected public-link. The severity of the issue is reduced to low because the attacker needs to know the public-link hash and the original filename of the image. Affected ----- - owncloud/core v10.4 Action taken -------- Applied...

Multiple XSS - ownCloud

Multiple stored and reflected XSS have been adressed. Affected Software ownCloud Server 6.0.2 Action Taken Acknowledgements The ownCloud team thanks the following people for their research and responsible disclosure of the above advisory: Dirk van Veen - Itq [email protected] - Vulnerability...

Local Path Disclosure when using Asset Pipeline - ownCloud

ownCloud 7 introduced the so-called "Asset Pipeline". It is disabled by default, but can be enabled by setting asset-pipeline.enabled to true in config.php When the setting is enabled ownCloud concatenates all CSS and JS files into a single large blob file. Thus the amount of initial required...

Server: Code execution in /lib/filesystem.php

Incomplete blacklist vulnerability in lib/filesystem.php in ownCloud before 4.0.9 and 4.5.2 allows authenticated remote attackers to execute arbitrary code by uploading a file with a special crafted filename. For more information please consult the official advisory. This advisory is licensed CC...

Cross-site Request Forgery in diagnostics app - ownCloud

Improper handling of CSRF protection in the diagnostics app in combination with the SameSite-Cookie setting being set to None allows cross site invocation of an admin API...

Authentication Bypass Using Pre-signed URLs - ownCloud

Improper validation may allow an attacker to bypass authentication and gain access to users’ files. Prior knowledge of a username and a file path is needed in order to gain access to a certain file...

Denial of Service in Comments API - ownCloud

Insufficient input validation in the Comments Plugin may allow an authenticated attacker to cause a Denial of Service...

Improper validation of certificates when using self-signed certificates 1.8.2

Platform: Desktop-clients Versions: 1.8.2, Date: 6/8/2015 Risk level: Medium CVSS v2 Base Score: 6.1 AV:N/AC:H/Au:N/C:C/I:P/A:N CWE: Improper Validation of Certificate with Host Mismatch CWE-297...

Improper Validation in the User Profile Metadata - ownCloud

Improper Validation in the User Profile Metadata may allow an authenticated attacker to edit their own profile in a way that consumes a substantial amount of resources, creating a Denial of Service...

Deleting received group share for whole group

Platform: ownCloud Server Versions: 10.2.0 Date: 2/28/2020 Risk: Low CVSS v3 Base Score: 3.5 CVSS v3 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N CWE ID: 385 CWE Name: Improper Privilege Management...

Access to all file-versions of a user - ownCloud security advisory

Platform: ownCloud Server Versions: 10.3.0 Date: 2/28/2020 Risk: Medium CVSS v3 Base Score: 6.8 CVSS v3 Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N CWE ID: 648 CWE Name: Incorrect Use of Privileged APIs...

Server: Deserialization of Untrusted Data in core

Due to the deserialization of unstrusted data in core an attacker might be able to delete arbitrary files from the filesystem or executing arbitrary SQL queries. This issue has been found in a widely used third-party library, we have removed the component due to general quality concerns from the...

Disclosure of sensitive credentials and configuration in containerized deployments - ownCloud

The “graphapi” app relies on a third-party library that provides a URL. When this URL is accessed, it reveals the configuration details of the PHP environment phpinfo. This information includes all the environment variables of the webserver. In containerized deployments, these environment variabl...

Files_antivirus doesn't delete virus if uploaded through public link

Risk: low CVSS v3 Base Score: 1.2 CVSS v3 Vector: AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:N CWE ID: CWE-280 CWE Name: Improper Handling of Insufficient Permissions or Privileges...

Possibility to extend internal share permissions using the API - ownCloud security advisory

Platform: ownCloud Server Versions: 10.0.0 Date: 7/25/2019 Risk level: High CVSS v3 Base Score: 8 Improper Privilege Management, CWE-269...

Server: Code execution in /lib/migrate.php

Incomplete blacklist vulnerability in lib/migrate.php in ownCloud before 4.5.2 allows authenticated remote attackers to execute arbitrary code by uploading a crafted mount.php file in an imported ZIP file. For more information please consult the official advisory. This advisory is licensed CC BY-...

Edit of share permissions causes public links misbehaviour - ownCloud

Changes to the permissions of a share where propagated to public links of child resources...

Security lock can be bypassed by changing the system date

Given an attacker has physical access to the device, a faulty timestamp check allowed to bypass the app lock by setting the system date to the past...

SSRF in “Add to your ownCloud” functionality - security advisory

It is possible to force the ownCloud server to execute GET requests against a crafted URL on the internal or external network Server Side Request Forgery after receiving a public link-share URL. The criticality of this issue is lowered because the attacker can not see the result of the forged...

Possibility to extend internal-share permissions using the API – ownCloud

An Attacker can extend the permission of a received subfolder share using the ocs api. Additional risk exists because the previlege extension is also possible on public-shares. Affected Software ownCloud Server 10.2.1 CVE-2019-???? core/55a29e0aaef5ebb55cf15ce309d7daaea4fb6c06 Action Taken Added...

XSS in "Share Interface" - ownCloud

Multiple stored and reflected XSS have been adressed. Affected Software ownCloud Server 5.0.8 Action Taken Acknowledgements The ownCloud team thanks the following people for their research and responsible disclosure of the above advisory: Lukas Reschke - ownCloud Inc. [email protected] -...

Server: Auth bypass in user_webdavauth and user_ldap

ownCloud 4.5.4, ownCloud 4.0.9 and all versions previous to this doesn't sufficiently verify whether a request to settings.php was sent by an admin, which allows unauthenticated users to edit app configurations of userwebdavauth and userldap. An unauthenticated attacker may use this to gain acces...

Public-Link Password-Bypass via Image-Previews - ownCloud security advisory

Platform: ownCloud Server Versions: 10.3 Date: 2/28/2020 Risk: Low CVSS v3 Base Score: 3.1 CVSS v3 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N CWE ID: 284 CWE Name: Improper Access Control...

Server: Insecure OpenID implementation

Due to an insecure OpenID implementation used by useropenid in ownCloud 5 it is possible to log-into a system using an arbitrary OpenID Account without knowing any secret information, i.e. the password, about it by using a malicious OpenID provider. For more information please consult the officia...

Biometric Authentication Bypass - ownCloud

Improper validation in the Biometric authentication process may allow an attacker to bypass that process and gain unauthorized access. This attack requires physical access to the vulnerable device...

SSRF in "Add to your ownCloud" functionality – ownCloud

------- It is possible to force the ownCloud server to execute GET requests against a crafted URL on the internal or external network Server Side Request Forgery after receiving a public link-share URL. The criticality of this issue is lowered because the attacker can not see the result of the...

Code execution in /lib/filesystem.php - ownCloud

Incomplete blacklist vulnerability in lib/filesystem.php in ownCloud before 4.0.9 and 4.5.2 allows authenticated remote attackers to execute arbitrary code by uploading a file with a special crafted filename. Affected Software ownCloud Server 4.0.10 CVE-2013-5665 ownCloud Server 4.5.5 CVE-2013-56...

Security Advisory: Credential Theft Incidents - ownCloud

Comprehensive MFA options with administrative controls to enforce policies organization-wide, plus alerts when risky settings are used Embedded network and web application firewalls that are pre-configured and continuously updated—no customer maintenance required Zero-trust architecture with...

Server: Users can mount the local filesystem

Due to not properly sanitzing the mount configuration authenticated users are able to mount the local filesystem into their ownCloud. A successful exploit requires the filesexternal app to be enabled. For more information please consult the official advisory. This advisory is licensed CC BY-SA 4....

Improper Validation in the User's Avatar Mechanism - ownCloud

Improper Validation in the User’s Avatar Mechanism may allow an authenticated attacker to edit their own profile in a way that consumes a substantial amount of resources, creating a Denial of Service...

Users can mount the local filesystem - ownCloud

Due to an insufficient permission check authenticated users are able to access preview pictures of others users. Affected Software ownCloud Server 6.0.1 Action Taken It is recommended that all instances are upgraded to ownCloud Server 6.0.2. Acknowledgements The ownCloud team thanks the following...

Server: Auth bypass in "user_webdavauth"

A not further specified authentication bypass in the userwebdavauth application has been found. Using this vulnerability an attacker might login to the ownCloud instance without valid credentials. For more information please consult the official advisory. This advisory is licensed CC BY-SA 4.0...

Reflected XSS in login page forgot password functionallity

The login page was not properly sanitizing exception messages from the ownCloud server...

Deleting received group share for whole group – ownCloud

------- A group-share recipient can remove the received group share for all group-recipients. No data-loss occurs as the share can be re-created again. Affected ----- - owncloud/core v10.3.0 Action taken -------- Improve permission check when deleting groups...

Code execution in /lib/migrate.php - ownCloud

Incomplete blacklist vulnerability in lib/migrate.php in ownCloud before 4.5.2 allows authenticated remote attackers to execute arbitrary code by uploading a crafted mount.php file in an imported ZIP file. Affected Software ownCloud Server 4.0.10 CVE-2013-5665 ownCloud Server 4.5.5 CVE-2013-5665...