Outline is a service that allows for collaborative documentation. The `shares.create` API endpoint starting in version 0.86.0 and prior to version 1.7.0 has an insecure direct object reference.. When both `collectionId` and `documentId` are provided in the request, the authorization logic only checks access to the collection, completely ignoring the document.
This allows an authenticated attacker to generate a valid public share link for any document on the platform, including documents belonging to other workspaces. The full document contents can then be retrieved via the `documents.info` endpoint. Version 1.7.0 contains a patch.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Getoutline Outline
cpe:2.3:a:getoutline:outline:*:*:*:*:*:*:*:*
|
0.86.0
|
1.7.0
|
References 3
https://github.com/outline/outline/commit/1b91a295e10f58a1088c54f533773788325ff…
security-advisories@github.com
https://github.com/outline/outline/releases/tag/v1.7.0
security-advisories@github.com
https://github.com/outline/outline/security/advisories/GHSA-23jj-rp48-w7q7
security-advisories@github.com