ownCloud - Bug Bounty Program
ownCloud GmbH is the company behind the ownCloud Project - the most downloaded open source project for data and file sync, share and view.
Reward
Program
Hacktivity
About
ownCloud
We created the ownCloud Security Bug Bounty Program to reward security researchers for finding issues in the ownCloud Server, and in so doing help strengthen ownCloud Server for customers, users and the community.
Program Rules
Testing Policy and Responsible Disclosure
Please adhere to the following rules while performing research on this program:
- Denial of service (DoS) attacks on ownCloud applications, servers, networks or infrastructure are strictly forbidden.
- Avoid tests that could cause degradation or interruption of our services.
- Do not use automated scanners or tools that generate large amount of network traffic.
- Do not leak, manipulate, or destroy any user data or files in any of our applications/servers.
- Do not copy any files from our applications/servers and disclose them.
- No vulnerability disclosure, full, partial or otherwise, is allowed.
Reward Eligibility
We are happy to thank everyone who submits valid reports which help us improve the security of ownCloud, however only those that meet the following eligibility requirements may receive a monetary reward:
- You must be the first reporter of a vulnerability.
- The vulnerability must be a qualifying vulnerability (see below).
- The report must contain the following elements:
- Clear textual description of the vulnerability, how it can be exploited, the security impact it has on the application, its users and ownCloud, and remediation advice on fixing the vulnerability
- Proof of exploitation: screenshots demonstrating the exploit was performed, and showing the final impact
- Provide complete steps with the necessary information to reproduce the exploit, including (if necessary) code snippets, payloads, commands etc
- You must not break any of the testing policy rules listed above
- You must not be a former or current employee of ownCloud or one of its contractors.
Reward amounts are based on:
- Reward grid of the report's scope
- CVSS scoring and actual business impact of the vulnerability upon performing risk analysis
If the bug is identified as meaningful and qualifies for the program, and the reporter has followed the Disclosure Policy, the bug bounty is paid out on the following schedule by bug severity:
| Impact | Definition | Reward |
|---|---|---|
| Critical | Gaining remote code execution on the server as a non-admin user. (i.e. RCE) | $2000 - $5000 |
| High | Gaining access to complete user data of any other user. (i.e. Auth Bypass) or SQL Injection with critical effects | $500 - $2000 |
| Medium | Allowing the adversary to gain complete control over a single user session. (Stored XSS with CSP bypass / Critical CSRF / …) | $50 - $500 |
| Low | Vulnerabilities that can only be exploited in very rare cases or have marginal impact. (High amount of unlikely user interaction / …) | $50 |
The severity of the bug is determined at the discretion of ownCloud and the ownCloud security team.
All bounties will be paid using YesWeHack platform.
Complements about our scopes
Desktop Client
- Issues affecting the Desktop Client available from https://owncloud.org/install/#install-clients
- Source: https://github.com/owncloud/client
Note that the ownCloud server itself is considered a trusted endpoint in our threat model and an eligible vulnerability must not rely on a malicious ownCloud instance.
com.owncloud.android
- Our official Android client from https://play.google.com/store/apps/details?id=com.owncloud.android.
- Source: https://github.com/owncloud/android
Note that the ownCloud server itself is considered a trusted endpoint in our threat model and an eligible vulnerability must not rely on a malicious ownCloud instance.
owncloud.iosapp
- Our official iOS client from https://apps.apple.com/app/id1359583808
- Source: https://github.com/owncloud/ios-app
Note that the ownCloud server itself is considered a trusted endpoint in our threat model and an eligible vulnerability must not rely on a malicious ownCloud instance.
owncloud/customgroups
- Code from: https://github.com/owncloud/customgroups
This apps makes it possible for users to create their own custom groups and manage members. It is then possible to share files or folders with these groups.
owncloud/guests
- Code from: https://github.com/owncloud/guests
Create a guest user by typing his name in to the sharing dialog. The guest will receive an email invite with a link to create an account. He only has access to files which are shared with him.
owncloud/richdocuments
- Code from: https://github.com/owncloud/richdocuments
Collabora Online for ownCloud provides collaborating editing functions for text documents, spreadsheets and presentations inside ownCloud for improved productivity.
owncloud/notifications
- Code from: https://github.com/owncloud/notifications
Notification backend and UI for the notification panel/icon. Used for notifications of other apps (announcementcenter, federatedfilesharing etc.)
owncloud/core
- Code from: https://github.com/owncloud/core
This is our core server software, which is "the heart" of owncloud.
Note that some folders such as tests and so on will not be packaged. Please make sure that the referenced file is thus also existent in our final releases.
owncloud/gallery
- Code from: https://github.com/owncloud/gallery
Media gallery for ownCloud which includes previews for all media types supported by your installation.
Provides a dedicated view of all images in a grid, adds image viewing capabilities to the files app and adds a gallery view to public links.
owncloud/ocis
- Code from: https://github.com/owncloud/ocis
This is next generation server software, which is "the new heart" of owncloud.
Note that some folders such as tests and so on will not be packaged. Please make sure that the referenced file is thus also existent in our final releases.
owncloud/user_ldap
- Code from: https://github.com/owncloud/user_ldap
This application enables administrators to connect ownCloud to an LDAP-based user directory for authentication and provisioning users, groups and user attributes. Admins can configure this application to connect to one or more LDAP directories or Active Directories via an LDAP interface. Attributes such as user quota, email, avatar pictures, group memberships and more can be pulled into ownCloud from a directory with the appropriate queries and filters.
owncloud/oauth2
- Code from: https://github.com/owncloud/oauth2
Application for using OAuth 2.0 in ownCloud
owncloud/activity
- Code from: https://github.com/owncloud/activity
Provides an activity feed showing your file changes and other interesting things going on in your ownCloud.
owncloud/updater
- Code from: https://github.com/owncloud/updater
owncloud/files
- Code from: https://github.com/owncloud/core/tree/master/apps/files
This is the app for owncloud file management.
Reward
| Asset value | CVSS | CVSS | CVSS | CVSS |
|---|---|---|---|---|
| $50 | $500 | $2,000 | $5,000 |
Scopes
| Scope | Type | Asset value | Expand rewards grid |
|---|---|---|---|
| https://owncloud.org/install/#install-clients | application | ||
Low Medium High Critical | |||
| https://play.google.com/store/apps/details?id=com.owncloud.android | mobile-application-android | ||
Low Medium High Critical | |||
| https://apps.apple.com/app/id1359583808 | mobile-application-ios | ||
Low Medium High Critical | |||
| https://github.com/owncloud/customgroups | other | ||
Low Medium High Critical | |||
| https://github.com/owncloud/guests | other | ||
Low Medium High Critical | |||
| https://github.com/owncloud/richdocuments | other | ||
Low Medium High Critical | |||
| https://github.com/owncloud/notifications | other | ||
Low Medium High Critical | |||
| https://github.com/owncloud/client | other | ||
Low Medium High Critical | |||
| https://github.com/owncloud/core | other | ||
Low Medium High Critical | |||
| https://github.com/owncloud/gallery | other | ||
Low Medium High Critical | |||
| https://github.com/owncloud/ocis | other | ||
Low Medium High Critical | |||
| https://github.com/owncloud/user_ldap | other | ||
Low Medium High Critical | |||
| https://github.com/owncloud/oauth2 | other | ||
Low Medium High Critical | |||
| https://github.com/owncloud/activity | other | ||
Low Medium High Critical | |||
| https://github.com/owncloud/updater | other | ||
Low Medium High Critical | |||
| https://github.com/owncloud/core/tree/master/apps/files | other | ||
Low Medium High Critical | |||
| https://github.com/owncloud/android | other | ||
Low Medium High Critical | |||
| https://github.com/owncloud/ios-app | other | ||
Low Medium High Critical | |||
Out of scopes
- All domains or subdomains not listed in the above list of 'Scopes'
- *.owncloud.org
- *.owncloud.com
Vulnerability types
Qualifying vulnerabilities
- SQL Injection (SQLi)
- Cross-Site Scripting (XSS)
- Remote Code Execution (RCE)
- Insecure Direct Object Reference (IDOR)
- Horizontal and vertical privilege escalation
- Authentication bypass & broken authentication
- Business Logic Errors vulnerability with real security impact
- Local files access and manipulation (LFI, RFI, XXE, SSRF, XSPA)
- Cross-Origin Resource Sharing (CORS) with real security impact
- Cross-site Request Forgery (CSRF) with real security impact
- Open Redirect
Non-qualifying vulnerabilities
- Tabnabbing
- Missing cookie flags
- Content/Text injections
- Mixed content warnings
- Clickjacking/UI redressing
- Denial of Service (DoS) attacks
- Known CVEs without working PoC
- Open ports without real security impact
- Social engineering of staff or contractors
- Presence of autocomplete attribute on web forms
- Vulnerabilities affecting outdated browsers or platforms
- Self-XSS or XSS that cannot be used to impact other users
- Outdated libraries without a demonstrated security impact
- Any hypothetical flaw or best practices without exploitable PoC
- Expired certificate, best practices and other related issues for TLS/SSL certificates
- Unexploitable vulnerabilities (ex: XSS or Open Redirect in HTTP Host Header)
- Reports with attack scenarios requiring MITM or physical access to victim's device
- Missing security-related HTTP headers which do not lead directly to a vulnerability
- Unauthenticated / Logout / Login and other low-severity Cross-Site Request Forgery (CSRF)
- Invalid or missing SPF (Sender Policy Framework), DKIM, DMARC records
- Session expiration policies (no automatic logout, invalidation after a certain time or after a password change)
- Disclosure of information without direct security impact (e.g. stack traces, path disclosure, directory listings, software versions, IP disclosure, 3rd party secrets)
- CSV injection
- HTTP Strict Transport Security Header (HSTS)
- Subdomain takeover without a full working PoC
- Blind SSRF without direct impact (e.g. DNS pingback)
- Lack of rate-limiting, brute-forcing or captcha issues
- User enumeration (email, alias, GUID, phone number)
- Password requirements policies (length / complexity / reuse)
- Ability to spam users (email / SMS / direct messages flooding)
- Disclosed / misconfigured Google API key (including Google Maps)
- Recently disclosed 0-day vulnerabilities (less than 180 days since patch release)
- Password reset token leak on trusted third-party website via Referer header (eg Google Analytics, Facebook…)
Hunting requirements
Account access
No test accounts will be provided.
User agent
Please append to your user-agent header the following value: ' -BugBounty-owncloud-31337 '.
Hunters collaboration
When submitting new report, you can add up to 5 collaborators, and define the reward split ratio.
For more information, see help center.
Note: For reports that have already been rewarded, it is not possible to redistribute the rewards.
